20880811

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3581}}^1$

素因数の和:3619

約数の個数: 16

約数和(自身を含む): 25790400

約数和(自身を除く): 4909589

約数列:

[1, 7, 17, 49, 119, 343, 833, 3581, 5831, 25067, 60877, 175469, 426139, 1228283, 2982973, 20880811]

約数ペア:

[(1, 20880811), (7, 2982973), (17, 1228283), (49, 426139), (119, 175469), (343, 60877), (833, 25067), (3581, 5831)]