21056799

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 30818304

約数和(自身を除く): 9761505

約数列:

[1, 3, 23, 43, 47, 69, 129, 141, 151, 453, 989, 1081, 2021, 2967, 3243, 3473, 6063, 6493, 7097, 10419, 19479, 21291, 46483, 139449, 149339, 163231, 305171, 448017, 489693, 915513, 7018933, 21056799]

約数ペア:

[(1, 21056799), (3, 7018933), (23, 915513), (43, 489693), (47, 448017), (69, 305171), (129, 163231), (141, 149339), (151, 139449), (453, 46483), (989, 21291), (1081, 19479), (2021, 10419), (2967, 7097), (3243, 6493), (3473, 6063)]