15691533640

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{395851}}^1$

素因数の和:396853

約数の個数: 32

約数和(自身を含む): 35341666560

約数和(自身を除く): 19650132920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 3964, 4955, 7928, 9910, 19820, 39640, 395851, 791702, 1583404, 1979255, 3166808, 3958510, 7917020, 15834040, 392288341, 784576682, 1569153364, 1961441705, 3138306728, 3922883410, 7845766820, 15691533640]

約数ペア:

[(1, 15691533640), (2, 7845766820), (4, 3922883410), (5, 3138306728), (8, 1961441705), (10, 1569153364), (20, 784576682), (40, 392288341), (991, 15834040), (1982, 7917020), (3964, 3958510), (4955, 3166808), (7928, 1979255), (9910, 1583404), (19820, 791702), (39640, 395851)]