The factors of the number 240,021,144 are: 1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 27, 33, 36, 44, 54, 66, 72, 81, 88, 99, 108, 132, 151, 162, 198, 216, 223, 264, 297, 302, 324, 396, 446, 453, 594, 604, 648, 669, 792, 891, 892, 906, 1188, 1208, 1338, 1359, 1661, 1782, 1784, 1812, 2007, 2376, 2453, 2676, 2718, 3322, 3564, 3624, 4014, 4077, 4906, 4983, 5352, 5436, 6021, 6644, 7128, 7359, 8028, 8154, 9812, 9966, 10872, 12042, 12231, 13288, 14718, 14949, 16056, 16308, 18063, 19624, 19932, 22077, 24084, 24462, 29436, 29898, 32616, 33673, 36126, 39864, 44154, 44847, 48168, 48924, 58872, 59796, 66231, 67346, 72252, 88308, 89694, 97848, 101019, 119592, 132462, 134541, 134692, 144504, 176616, 179388, 198693, 202038, 264924, 269082, 269384, 303057, 358776, 370403, 397386, 404076, 529848, 538164, 606114, 740806, 794772, 808152, 909171, 1076328, 1111209, 1212228, 1481612, 1589544, 1818342, 2222418, 2424456, 2727513, 2963224, 3333627, 3636684, 4444836, 5455026, 6667254, 7273368, 8889672, 10000881, 10910052, 13334508, 20001762, 21820104, 26669016, 30002643, 40003524, 60005286, 80007048, 120010572, 240021144.
If you add them up, you will get the total of 741,565,440.