21914879

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:470

約数の個数: 16

約数和(自身を含む): 25589760

約数和(自身を除く): 3674881

約数列:

[1, 7, 101, 139, 223, 707, 973, 1561, 14039, 22523, 30997, 98273, 157661, 216979, 3130697, 21914879]

約数ペア:

[(1, 21914879), (7, 3130697), (101, 216979), (139, 157661), (223, 98273), (707, 30997), (973, 22523), (1561, 14039)]