21421460

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{6571}}^1$

素因数の和:6743

約数の個数: 24

約数和(自身を含む): 45267936

約数和(自身を除く): 23846476

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 6571, 13142, 26284, 32855, 65710, 131420, 1071073, 2142146, 4284292, 5355365, 10710730, 21421460]

約数ペア:

[(1, 21421460), (2, 10710730), (4, 5355365), (5, 4284292), (10, 2142146), (20, 1071073), (163, 131420), (326, 65710), (652, 32855), (815, 26284), (1630, 13142), (3260, 6571)]