21000739240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40386037}}^1$

素因数の和:40386061

約数の個数: 32

約数和(自身を含む): 50886407880

約数和(自身を除く): 29885668640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40386037, 80772074, 161544148, 201930185, 323088296, 403860370, 525018481, 807720740, 1050036962, 1615441480, 2100073924, 2625092405, 4200147848, 5250184810, 10500369620, 21000739240]

約数ペア:

[(1, 21000739240), (2, 10500369620), (4, 5250184810), (5, 4200147848), (8, 2625092405), (10, 2100073924), (13, 1615441480), (20, 1050036962), (26, 807720740), (40, 525018481), (52, 403860370), (65, 323088296), (104, 201930185), (130, 161544148), (260, 80772074), (520, 40386037)]