56721791

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{521}}^1$

素因数の和:782

約数の個数: 16

約数和(自身を含む): 66014208

約数和(自身を除く): 9292417

約数列:

[1, 7, 103, 151, 521, 721, 1057, 3647, 15553, 53663, 78671, 108871, 375641, 550697, 8103113, 56721791]

約数ペア:

[(1, 56721791), (7, 8103113), (103, 550697), (151, 375641), (521, 108871), (721, 78671), (1057, 53663), (3647, 15553)]