20648780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14143}}^1$

素因数の和:14225

約数の個数: 24

約数和(自身を含む): 43959552

約数和(自身を除く): 23310772

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 14143, 28286, 56572, 70715, 141430, 282860, 1032439, 2064878, 4129756, 5162195, 10324390, 20648780]

約数ペア:

[(1, 20648780), (2, 10324390), (4, 5162195), (5, 4129756), (10, 2064878), (20, 1032439), (73, 282860), (146, 141430), (292, 70715), (365, 56572), (730, 28286), (1460, 14143)]