20881693

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{233}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 25608960

約数和(自身を除く): 4727267

約数列:

[1, 7, 31, 49, 59, 217, 233, 413, 1519, 1631, 1829, 2891, 7223, 11417, 12803, 13747, 50561, 89621, 96229, 353927, 426157, 673603, 2983099, 20881693]

約数ペア:

[(1, 20881693), (7, 2983099), (31, 673603), (49, 426157), (59, 353927), (217, 96229), (233, 89621), (413, 50561), (1519, 13747), (1631, 12803), (1829, 11417), (2891, 7223)]