19878916

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{7901}}^1$

素因数の和:7959

約数の個数: 24

約数和(自身を含む): 37834776

約数和(自身を除く): 17955860

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 148, 629, 1258, 2516, 7901, 15802, 31604, 134317, 268634, 292337, 537268, 584674, 1169348, 4969729, 9939458, 19878916]

約数ペア:

[(1, 19878916), (2, 9939458), (4, 4969729), (17, 1169348), (34, 584674), (37, 537268), (68, 292337), (74, 268634), (148, 134317), (629, 31604), (1258, 15802), (2516, 7901)]