280227825

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:915

約数の個数: 72

約数和(自身を含む): 528700536

約数和(自身を除く): 248472711

約数列:

[1, 3, 5, 9, 15, 25, 37, 41, 45, 75, 111, 123, 185, 205, 225, 333, 369, 555, 615, 821, 925, 1025, 1517, 1665, 1845, 2463, 2775, 3075, 4105, 4551, 7389, 7585, 8325, 9225, 12315, 13653, 20525, 22755, 30377, 33661, 36945, 37925, 61575, 68265, 91131, 100983, 113775, 151885, 168305, 184725, 273393, 302949, 341325, 455655, 504915, 759425, 841525, 1245457, 1366965, 1514745, 2278275, 2524575, 3736371, 6227285, 6834825, 7573725, 11209113, 18681855, 31136425, 56045565, 93409275, 280227825]

約数ペア:

[(1, 280227825), (3, 93409275), (5, 56045565), (9, 31136425), (15, 18681855), (25, 11209113), (37, 7573725), (41, 6834825), (45, 6227285), (75, 3736371), (111, 2524575), (123, 2278275), (185, 1514745), (205, 1366965), (225, 1245457), (333, 841525), (369, 759425), (555, 504915), (615, 455655), (821, 341325), (925, 302949), (1025, 273393), (1517, 184725), (1665, 168305), (1845, 151885), (2463, 113775), (2775, 100983), (3075, 91131), (4105, 68265), (4551, 61575), (7389, 37925), (7585, 36945), (8325, 33661), (9225, 30377), (12315, 22755), (13653, 20525)]