21292285

素因数分解:

$5^1\times 7^1\times {\mathrm{773}}^1\times {\mathrm{787}}^1$

素因数の和:1572

約数の個数: 16

約数和(自身を含む): 29275776

約数和(自身を除く): 7983491

約数列:

[1, 5, 7, 35, 773, 787, 3865, 3935, 5411, 5509, 27055, 27545, 608351, 3041755, 4258457, 21292285]

約数ペア:

[(1, 21292285), (5, 4258457), (7, 3041755), (35, 608351), (773, 27545), (787, 27055), (3865, 5509), (3935, 5411)]