15921640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{563}}^1$

素因数の和:682

約数の個数: 64

約数和(自身を含む): 41420160

約数和(自身を除く): 25498520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 563, 707, 808, 1010, 1126, 1414, 2020, 2252, 2815, 2828, 3535, 3941, 4040, 4504, 5630, 5656, 7070, 7882, 11260, 14140, 15764, 19705, 22520, 28280, 31528, 39410, 56863, 78820, 113726, 157640, 227452, 284315, 398041, 454904, 568630, 796082, 1137260, 1592164, 1990205, 2274520, 3184328, 3980410, 7960820, 15921640]

約数ペア:

[(1, 15921640), (2, 7960820), (4, 3980410), (5, 3184328), (7, 2274520), (8, 1990205), (10, 1592164), (14, 1137260), (20, 796082), (28, 568630), (35, 454904), (40, 398041), (56, 284315), (70, 227452), (101, 157640), (140, 113726), (202, 78820), (280, 56863), (404, 39410), (505, 31528), (563, 28280), (707, 22520), (808, 19705), (1010, 15764), (1126, 14140), (1414, 11260), (2020, 7882), (2252, 7070), (2815, 5656), (2828, 5630), (3535, 4504), (3941, 4040)]