21761957

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{1151}}^1$

素因数の和:1268

約数の個数: 16

約数和(自身を含む): 25915392

約数和(自身を除く): 4153435

約数列:

[1, 7, 37, 73, 259, 511, 1151, 2701, 8057, 18907, 42587, 84023, 298109, 588161, 3108851, 21761957]

約数ペア:

[(1, 21761957), (7, 3108851), (37, 588161), (73, 298109), (259, 84023), (511, 42587), (1151, 18907), (2701, 8057)]