20377679

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{1439}}^1$

素因数の和:1487

約数の個数: 18

約数和(自身を含む): 25198560

約数和(自身を除く): 4820881

約数列:

[1, 7, 17, 49, 119, 289, 833, 1439, 2023, 10073, 14161, 24463, 70511, 171241, 415871, 1198687, 2911097, 20377679]

約数ペア:

[(1, 20377679), (7, 2911097), (17, 1198687), (49, 415871), (119, 171241), (289, 70511), (833, 24463), (1439, 14161), (2023, 10073)]