20465977

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{311}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 25608960

約数和(自身を除く): 5142983

約数列:

[1, 7, 17, 49, 79, 119, 311, 553, 833, 1343, 2177, 3871, 5287, 9401, 15239, 24569, 37009, 65807, 171983, 259063, 417673, 1203881, 2923711, 20465977]

約数ペア:

[(1, 20465977), (7, 2923711), (17, 1203881), (49, 417673), (79, 259063), (119, 171983), (311, 65807), (553, 37009), (833, 24569), (1343, 15239), (2177, 9401), (3871, 5287)]