257465960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{1223}}^1$

素因数の和:1530

約数の個数: 64

約数和(自身を含む): 612489600

約数和(自身を除く): 355023640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 277, 380, 554, 760, 1108, 1223, 1385, 2216, 2446, 2770, 4892, 5263, 5540, 6115, 9784, 10526, 11080, 12230, 21052, 23237, 24460, 26315, 42104, 46474, 48920, 52630, 92948, 105260, 116185, 185896, 210520, 232370, 338771, 464740, 677542, 929480, 1355084, 1693855, 2710168, 3387710, 6436649, 6775420, 12873298, 13550840, 25746596, 32183245, 51493192, 64366490, 128732980, 257465960]

約数ペア:

[(1, 257465960), (2, 128732980), (4, 64366490), (5, 51493192), (8, 32183245), (10, 25746596), (19, 13550840), (20, 12873298), (38, 6775420), (40, 6436649), (76, 3387710), (95, 2710168), (152, 1693855), (190, 1355084), (277, 929480), (380, 677542), (554, 464740), (760, 338771), (1108, 232370), (1223, 210520), (1385, 185896), (2216, 116185), (2446, 105260), (2770, 92948), (4892, 52630), (5263, 48920), (5540, 46474), (6115, 42104), (9784, 26315), (10526, 24460), (11080, 23237), (12230, 21052)]