201520221

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{617}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 312619008

約数和(自身を除く): 111098787

約数列:

[1, 3, 7, 21, 103, 151, 309, 453, 617, 721, 1057, 1851, 2163, 3171, 4319, 12957, 15553, 46659, 63551, 93167, 108871, 190653, 279501, 326613, 444857, 652169, 1334571, 1956507, 9596201, 28788603, 67173407, 201520221]

約数ペア:

[(1, 201520221), (3, 67173407), (7, 28788603), (21, 9596201), (103, 1956507), (151, 1334571), (309, 652169), (453, 444857), (617, 326613), (721, 279501), (1057, 190653), (1851, 108871), (2163, 93167), (3171, 63551), (4319, 46659), (12957, 15553)]