21431917

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2621}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 25108272

約数和(自身を除く): 3676355

約数列:

[1, 13, 17, 37, 221, 481, 629, 2621, 8177, 34073, 44557, 96977, 579241, 1260701, 1648609, 21431917]

約数ペア:

[(1, 21431917), (13, 1648609), (17, 1260701), (37, 579241), (221, 96977), (481, 44557), (629, 34073), (2621, 8177)]