20505961

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 25608960

約数和(自身を除く): 5102999

約数列:

[1, 7, 17, 49, 103, 119, 239, 721, 833, 1673, 1751, 4063, 5047, 11711, 12257, 24617, 28441, 85799, 172319, 199087, 418489, 1206233, 2929423, 20505961]

約数ペア:

[(1, 20505961), (7, 2929423), (17, 1206233), (49, 418489), (103, 199087), (119, 172319), (239, 85799), (721, 28441), (833, 24617), (1673, 12257), (1751, 11711), (4063, 5047)]