20137599760

素因数分解:

$2^4\times 5^1\times {\mathrm{557}}^1\times {\mathrm{451921}}^1$

素因数の和:452491

約数の個数: 40

約数和(自身を含む): 46904080536

約数和(自身を除く): 26766480776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 557, 1114, 2228, 2785, 4456, 5570, 8912, 11140, 22280, 44560, 451921, 903842, 1807684, 2259605, 3615368, 4519210, 7230736, 9038420, 18076840, 36153680, 251719997, 503439994, 1006879988, 1258599985, 2013759976, 2517199970, 4027519952, 5034399940, 10068799880, 20137599760]

約数ペア:

[(1, 20137599760), (2, 10068799880), (4, 5034399940), (5, 4027519952), (8, 2517199970), (10, 2013759976), (16, 1258599985), (20, 1006879988), (40, 503439994), (80, 251719997), (557, 36153680), (1114, 18076840), (2228, 9038420), (2785, 7230736), (4456, 4519210), (5570, 3615368), (8912, 2259605), (11140, 1807684), (22280, 903842), (44560, 451921)]