20281781

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{853}}^1$

素因数の和:956

約数の個数: 16

約数和(自身を含む): 22955520

約数和(自身を除く): 2673739

約数列:

[1, 13, 31, 59, 403, 767, 853, 1829, 11089, 23777, 26443, 50327, 343759, 654251, 1560137, 20281781]

約数ペア:

[(1, 20281781), (13, 1560137), (31, 654251), (59, 343759), (403, 50327), (767, 26443), (853, 23777), (1829, 11089)]