21343779

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{677}}^1$

素因数の和:827

約数の個数: 24

約数和(自身を含む): 32153472

約数和(自身を除く): 10809693

約数列:

[1, 3, 9, 31, 93, 113, 279, 339, 677, 1017, 2031, 3503, 6093, 10509, 20987, 31527, 62961, 76501, 188883, 229503, 688509, 2371531, 7114593, 21343779]

約数ペア:

[(1, 21343779), (3, 7114593), (9, 2371531), (31, 688509), (93, 229503), (113, 188883), (279, 76501), (339, 62961), (677, 31527), (1017, 20987), (2031, 10509), (3503, 6093)]