28935760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:500

約数の個数: 80

約数和(自身を含む): 77602176

約数和(自身を除く): 48666416

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 163, 280, 317, 326, 560, 634, 652, 815, 1141, 1268, 1304, 1585, 1630, 2219, 2282, 2536, 2608, 3170, 3260, 4438, 4564, 5072, 5705, 6340, 6520, 8876, 9128, 11095, 11410, 12680, 13040, 17752, 18256, 22190, 22820, 25360, 35504, 44380, 45640, 51671, 88760, 91280, 103342, 177520, 206684, 258355, 361697, 413368, 516710, 723394, 826736, 1033420, 1446788, 1808485, 2066840, 2893576, 3616970, 4133680, 5787152, 7233940, 14467880, 28935760]

約数ペア:

[(1, 28935760), (2, 14467880), (4, 7233940), (5, 5787152), (7, 4133680), (8, 3616970), (10, 2893576), (14, 2066840), (16, 1808485), (20, 1446788), (28, 1033420), (35, 826736), (40, 723394), (56, 516710), (70, 413368), (80, 361697), (112, 258355), (140, 206684), (163, 177520), (280, 103342), (317, 91280), (326, 88760), (560, 51671), (634, 45640), (652, 44380), (815, 35504), (1141, 25360), (1268, 22820), (1304, 22190), (1585, 18256), (1630, 17752), (2219, 13040), (2282, 12680), (2536, 11410), (2608, 11095), (3170, 9128), (3260, 8876), (4438, 6520), (4564, 6340), (5072, 5705)]