64005220

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{17681}}^1$

素因数の和:17871

約数の個数: 24

約数和(自身を含む): 135161208

約数和(自身を除く): 71155988

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 17681, 35362, 70724, 88405, 176810, 353620, 3200261, 6400522, 12801044, 16001305, 32002610, 64005220]

約数ペア:

[(1, 64005220), (2, 32002610), (4, 16001305), (5, 12801044), (10, 6400522), (20, 3200261), (181, 353620), (362, 176810), (724, 88405), (905, 70724), (1810, 35362), (3620, 17681)]