21000620151

素因数分解:

$3^2\times 7^1\times {\mathrm{10007}}^1\times {\mathrm{33311}}^1$

素因数の和:43331

約数の個数: 24

約数和(自身を含む): 34672195584

約数和(自身を除く): 13671575433

約数列:

[1, 3, 7, 9, 21, 63, 10007, 30021, 33311, 70049, 90063, 99933, 210147, 233177, 299799, 630441, 699531, 2098593, 333343177, 1000029531, 2333402239, 3000088593, 7000206717, 21000620151]

約数ペア:

[(1, 21000620151), (3, 7000206717), (7, 3000088593), (9, 2333402239), (21, 1000029531), (63, 333343177), (10007, 2098593), (30021, 699531), (33311, 630441), (70049, 299799), (90063, 233177), (99933, 210147)]