20320340

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1291}}^1$

素因数の和:2087

約数の個数: 24

約数和(自身を含む): 42760032

約数和(自身を除く): 22439692

約数列:

[1, 2, 4, 5, 10, 20, 787, 1291, 1574, 2582, 3148, 3935, 5164, 6455, 7870, 12910, 15740, 25820, 1016017, 2032034, 4064068, 5080085, 10160170, 20320340]

約数ペア:

[(1, 20320340), (2, 10160170), (4, 5080085), (5, 4064068), (10, 2032034), (20, 1016017), (787, 25820), (1291, 15740), (1574, 12910), (2582, 7870), (3148, 6455), (3935, 5164)]