The factors of the number 15,162,336 are: 1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 23, 24, 27, 28, 32, 36, 42, 46, 48, 54, 56, 63, 69, 72, 84, 92, 96, 108, 109, 112, 126, 138, 144, 161, 168, 184, 189, 207, 216, 218, 224, 252, 276, 288, 322, 327, 336, 368, 378, 414, 432, 436, 483, 504, 552, 621, 644, 654, 672, 736, 756, 763, 828, 864, 872, 966, 981, 1008, 1104, 1242, 1288, 1308, 1449, 1512, 1526, 1656, 1744, 1932, 1962, 2016, 2208, 2289, 2484, 2507, 2576, 2616, 2898, 2943, 3024, 3052, 3312, 3488, 3864, 3924, 4347, 4578, 4968, 5014, 5152, 5232, 5796, 5886, 6048, 6104, 6624, 6867, 7521, 7728, 7848, 8694, 9156, 9936, 10028, 10464, 11592, 11772, 12208, 13734, 15042, 15456, 15696, 17388, 17549, 18312, 19872, 20056, 20601, 22563, 23184, 23544, 24416, 27468, 30084, 31392, 34776, 35098, 36624, 40112, 41202, 45126, 46368, 47088, 52647, 54936, 60168, 67689, 69552, 70196, 73248, 80224, 82404, 90252, 94176, 105294, 109872, 120336, 135378, 139104, 140392, 157941, 164808, 180504, 210588, 219744, 240672, 270756, 280784, 315882, 329616, 361008, 421176, 473823, 541512, 561568, 631764, 659232, 722016, 842352, 947646, 1083024, 1263528, 1684704, 1895292, 2166048, 2527056, 3790584, 5054112, 7581168, 15162336.
If you add them up, you will get the total of 53,222,400.