21318825

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25841}}^1$

素因数の和:25865

約数の個数: 24

約数和(自身を含む): 38452896

約数和(自身を除く): 17134071

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25841, 77523, 129205, 284251, 387615, 646025, 852753, 1421255, 1938075, 4263765, 7106275, 21318825]

約数ペア:

[(1, 21318825), (3, 7106275), (5, 4263765), (11, 1938075), (15, 1421255), (25, 852753), (33, 646025), (55, 387615), (75, 284251), (165, 129205), (275, 77523), (825, 25841)]