18620540

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1787}}^1$

素因数の和:2317

約数の個数: 24

約数和(自身を含む): 39200112

約数和(自身を除く): 20579572

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1787, 2084, 2605, 3574, 5210, 7148, 8935, 10420, 17870, 35740, 931027, 1862054, 3724108, 4655135, 9310270, 18620540]

約数ペア:

[(1, 18620540), (2, 9310270), (4, 4655135), (5, 3724108), (10, 1862054), (20, 931027), (521, 35740), (1042, 17870), (1787, 10420), (2084, 8935), (2605, 7148), (3574, 5210)]