20378065

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{419}}^1$

素因数の和:632

約数の個数: 16

約数和(自身を含む): 25038720

約数和(自身を除く): 4660655

約数列:

[1, 5, 71, 137, 355, 419, 685, 2095, 9727, 29749, 48635, 57403, 148745, 287015, 4075613, 20378065]

約数ペア:

[(1, 20378065), (5, 4075613), (71, 287015), (137, 148745), (355, 57403), (419, 48635), (685, 29749), (2095, 9727)]