91721021

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1\times {\mathrm{661}}^1$

素因数の和:1172

約数の個数: 16

約数和(自身を含む): 107657088

約数和(自身を除く): 15936067

約数列:

[1, 7, 43, 301, 461, 661, 3227, 4627, 19823, 28423, 138761, 198961, 304721, 2133047, 13103003, 91721021]

約数ペア:

[(1, 91721021), (7, 13103003), (43, 2133047), (301, 304721), (461, 198961), (661, 138761), (3227, 28423), (4627, 19823)]