17908919

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{103}}^1\times {\mathrm{421}}^1$

素因数の和:590

約数の個数: 16

約数和(自身を含む): 21066240

約数和(自身を除く): 3157321

約数列:

[1, 7, 59, 103, 413, 421, 721, 2947, 6077, 24839, 42539, 43363, 173873, 303541, 2558417, 17908919]

約数ペア:

[(1, 17908919), (7, 2558417), (59, 303541), (103, 173873), (413, 43363), (421, 42539), (721, 24839), (2947, 6077)]