The factors of the number 276,406,680 are: 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 33, 38, 40, 44, 55, 57, 60, 66, 76, 88, 95, 103, 107, 110, 114, 120, 132, 152, 165, 190, 206, 209, 214, 220, 228, 264, 285, 309, 321, 330, 380, 412, 418, 428, 440, 456, 515, 535, 570, 618, 627, 642, 660, 760, 824, 836, 856, 1030, 1045, 1070, 1133, 1140, 1177, 1236, 1254, 1284, 1320, 1545, 1605, 1672, 1957, 2033, 2060, 2090, 2140, 2266, 2280, 2354, 2472, 2508, 2568, 3090, 3135, 3210, 3399, 3531, 3914, 4066, 4120, 4180, 4280, 4532, 4708, 5016, 5665, 5871, 5885, 6099, 6180, 6270, 6420, 6798, 7062, 7828, 8132, 8360, 9064, 9416, 9785, 10165, 11021, 11330, 11742, 11770, 12198, 12360, 12540, 12840, 13596, 14124, 15656, 16264, 16995, 17655, 19570, 20330, 21527, 22042, 22363, 22660, 23484, 23540, 24396, 25080, 27192, 28248, 29355, 30495, 33063, 33990, 35310, 39140, 40660, 43054, 44084, 44726, 45320, 46968, 47080, 48792, 55105, 58710, 60990, 64581, 66126, 67089, 67980, 70620, 78280, 81320, 86108, 88168, 89452, 107635, 110210, 111815, 117420, 121231, 121980, 129162, 132252, 134178, 135960, 141240, 165315, 172216, 178904, 209399, 215270, 220420, 223630, 234840, 242462, 243960, 258324, 264504, 268356, 322905, 330630, 335445, 363693, 418798, 430540, 440840, 447260, 484924, 516648, 536712, 606155, 628197, 645810, 661260, 670890, 727386, 837596, 861080, 894520, 969848, 1046995, 1212310, 1256394, 1291620, 1322520, 1341780, 1454772, 1675192, 1818465, 2093990, 2303389, 2424620, 2512788, 2583240, 2683560, 2909544, 3140985, 3636930, 4187980, 4606778, 4849240, 5025576, 6281970, 6910167, 7273860, 8375960, 9213556, 11516945, 12563940, 13820334, 14547720, 18427112, 23033890, 25127880, 27640668, 34550835, 46067780, 55281336, 69101670, 92135560, 138203340, 276406680.
If you add them up, you will get the total of 970,444,800.