20621237

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{5527}}^1$

素因数の和:5588

約数の個数: 16

約数和(自身を含む): 26003712

約数和(自身を除く): 5382475

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 5527, 38689, 71851, 226607, 502957, 1586249, 2945891, 20621237]

約数ペア:

[(1, 20621237), (7, 2945891), (13, 1586249), (41, 502957), (91, 226607), (287, 71851), (533, 38689), (3731, 5527)]