28723009

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{491}}^1$

素因数の和:696

約数の個数: 16

約数和(自身を含む): 33676416

約数和(自身を除く): 4953407

約数列:

[1, 7, 61, 137, 427, 491, 959, 3437, 8357, 29951, 58499, 67267, 209657, 470869, 4103287, 28723009]

約数ペア:

[(1, 28723009), (7, 4103287), (61, 470869), (137, 209657), (427, 67267), (491, 58499), (959, 29951), (3437, 8357)]