18416920

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1471}}^1$

素因数の和:1795

約数の個数: 32

約数和(自身を含む): 41598720

約数和(自身を除く): 23181800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1471, 1565, 2504, 2942, 3130, 5884, 6260, 7355, 11768, 12520, 14710, 29420, 58840, 460423, 920846, 1841692, 2302115, 3683384, 4604230, 9208460, 18416920]

約数ペア:

[(1, 18416920), (2, 9208460), (4, 4604230), (5, 3683384), (8, 2302115), (10, 1841692), (20, 920846), (40, 460423), (313, 58840), (626, 29420), (1252, 14710), (1471, 12520), (1565, 11768), (2504, 7355), (2942, 6260), (3130, 5884)]