18912901

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1\times {\mathrm{617}}^1$

素因数の和:804

約数の個数: 16

約数和(自身を含む): 22544640

約数和(自身を除く): 3631739

約数列:

[1, 7, 29, 151, 203, 617, 1057, 4319, 4379, 17893, 30653, 93167, 125251, 652169, 2701843, 18912901]

約数ペア:

[(1, 18912901), (7, 2701843), (29, 652169), (151, 125251), (203, 93167), (617, 30653), (1057, 17893), (4319, 4379)]