81378804

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{521659}}^1$

素因数の和:521679

約数の個数: 24

約数和(自身を含む): 204490720

約数和(自身を除く): 123111916

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 521659, 1043318, 1564977, 2086636, 3129954, 6259908, 6781567, 13563134, 20344701, 27126268, 40689402, 81378804]

約数ペア:

[(1, 81378804), (2, 40689402), (3, 27126268), (4, 20344701), (6, 13563134), (12, 6781567), (13, 6259908), (26, 3129954), (39, 2086636), (52, 1564977), (78, 1043318), (156, 521659)]