21307953

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{14407}}^1$

素因数の和:14456

約数の個数: 16

約数和(自身を含む): 31121280

約数和(自身を除く): 9813327

約数列:

[1, 3, 17, 29, 51, 87, 493, 1479, 14407, 43221, 244919, 417803, 734757, 1253409, 7102651, 21307953]

約数ペア:

[(1, 21307953), (3, 7102651), (17, 1253409), (29, 734757), (51, 417803), (87, 244919), (493, 43221), (1479, 14407)]