20647728423

素因数分解:

$3^2\times 7^1\times {\mathrm{2531}}^1\times {\mathrm{129491}}^1$

素因数の和:132035

約数の個数: 24

約数和(自身を含む): 34098869376

約数和(自身を除く): 13451140953

約数列:

[1, 3, 7, 9, 21, 63, 2531, 7593, 17717, 22779, 53151, 129491, 159453, 388473, 906437, 1165419, 2719311, 8157933, 327741721, 983225163, 2294192047, 2949675489, 6882576141, 20647728423]

約数ペア:

[(1, 20647728423), (3, 6882576141), (7, 2949675489), (9, 2294192047), (21, 983225163), (63, 327741721), (2531, 8157933), (7593, 2719311), (17717, 1165419), (22779, 906437), (53151, 388473), (129491, 159453)]