18043640

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1423}}^1$

素因数の和:1751

約数の個数: 32

約数和(自身を含む): 40754880

約数和(自身を除く): 22711240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1423, 1585, 2536, 2846, 3170, 5692, 6340, 7115, 11384, 12680, 14230, 28460, 56920, 451091, 902182, 1804364, 2255455, 3608728, 4510910, 9021820, 18043640]

約数ペア:

[(1, 18043640), (2, 9021820), (4, 4510910), (5, 3608728), (8, 2255455), (10, 1804364), (20, 902182), (40, 451091), (317, 56920), (634, 28460), (1268, 14230), (1423, 12680), (1585, 11384), (2536, 7115), (2846, 6340), (3170, 5692)]