256641

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:133

約数の個数: 24

約数和(自身を含む): 434112

約数和(自身を除く): 177471

約数列:

[1, 3, 7, 11, 21, 33, 77, 101, 121, 231, 303, 363, 707, 847, 1111, 2121, 2541, 3333, 7777, 12221, 23331, 36663, 85547, 256641]

約数ペア:

[(1, 256641), (3, 85547), (7, 36663), (11, 23331), (21, 12221), (33, 7777), (77, 3333), (101, 2541), (121, 2121), (231, 1111), (303, 847), (363, 707)]