21921575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1823}}^1$

素因数の和:1883

約数の個数: 24

約数和(自身を含む): 30081408

約数和(自身を除く): 8159833

約数列:

[1, 5, 13, 25, 37, 65, 185, 325, 481, 925, 1823, 2405, 9115, 12025, 23699, 45575, 67451, 118495, 337255, 592475, 876863, 1686275, 4384315, 21921575]

約数ペア:

[(1, 21921575), (5, 4384315), (13, 1686275), (25, 876863), (37, 592475), (65, 337255), (185, 118495), (325, 67451), (481, 45575), (925, 23699), (1823, 12025), (2405, 9115)]