21741380

素因数分解:

$2^2\times 5^1\times {\mathrm{739}}^1\times {\mathrm{1471}}^1$

素因数の和:2219

約数の個数: 24

約数和(自身を含む): 45749760

約数和(自身を除く): 24008380

約数列:

[1, 2, 4, 5, 10, 20, 739, 1471, 1478, 2942, 2956, 3695, 5884, 7355, 7390, 14710, 14780, 29420, 1087069, 2174138, 4348276, 5435345, 10870690, 21741380]

約数ペア:

[(1, 21741380), (2, 10870690), (4, 5435345), (5, 4348276), (10, 2174138), (20, 1087069), (739, 29420), (1471, 14780), (1478, 14710), (2942, 7390), (2956, 7355), (3695, 5884)]