21715221

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{21227}}^1$

素因数の和:21272

約数の個数: 16

約数和(自身を含む): 32606208

約数和(自身を除く): 10890987

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 21227, 63681, 233497, 658037, 700491, 1974111, 7238407, 21715221]

約数ペア:

[(1, 21715221), (3, 7238407), (11, 1974111), (31, 700491), (33, 658037), (93, 233497), (341, 63681), (1023, 21227)]