21531209161

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2565377}}^1$

素因数の和:2565504

約数の個数: 16

約数和(自身を含む): 27090391680

約数和(自身を除く): 5559182519

約数列:

[1, 7, 11, 77, 109, 763, 1199, 8393, 2565377, 17957639, 28219147, 197534029, 279626093, 1957382651, 3075887023, 21531209161]

約数ペア:

[(1, 21531209161), (7, 3075887023), (11, 1957382651), (77, 279626093), (109, 197534029), (763, 28219147), (1199, 17957639), (8393, 2565377)]