21036617

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{179}}^1$

素因数の和:452

約数の個数: 16

約数和(自身を含む): 24560640

約数和(自身を除く): 3524023

約数列:

[1, 7, 103, 163, 179, 721, 1141, 1253, 16789, 18437, 29177, 117523, 129059, 204239, 3005231, 21036617]

約数ペア:

[(1, 21036617), (7, 3005231), (103, 204239), (163, 129059), (179, 117523), (721, 29177), (1141, 18437), (1253, 16789)]