20210872717

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{7997971}}^1$

素因数の和:7998016

約数の個数: 12

約数和(自身を含む): 24377818656

約数和(自身を除く): 4166945939

約数列:

[1, 7, 19, 133, 361, 2527, 7997971, 55985797, 151961449, 1063730143, 2887267531, 20210872717]

約数ペア:

[(1, 20210872717), (7, 2887267531), (19, 1063730143), (133, 151961449), (361, 55985797), (2527, 7997971)]