20099317

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{457}}^1$

素因数の和:628

約数の個数: 16

約数和(自身を含む): 23625472

約数和(自身を除く): 3526155

約数列:

[1, 7, 61, 103, 427, 457, 721, 3199, 6283, 27877, 43981, 47071, 195139, 329497, 2871331, 20099317]

約数ペア:

[(1, 20099317), (7, 2871331), (61, 329497), (103, 195139), (427, 47071), (457, 43981), (721, 27877), (3199, 6283)]