21611090

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{74521}}^1$

素因数の和:74557

約数の個数: 16

約数和(自身を含む): 40241880

約数和(自身を除く): 18630790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 74521, 149042, 372605, 745210, 2161109, 4322218, 10805545, 21611090]

約数ペア:

[(1, 21611090), (2, 10805545), (5, 4322218), (10, 2161109), (29, 745210), (58, 372605), (145, 149042), (290, 74521)]