80821390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{621703}}^1$

素因数の和:621723

約数の個数: 16

約数和(自身を含む): 156669408

約数和(自身を除く): 75848018

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 621703, 1243406, 3108515, 6217030, 8082139, 16164278, 40410695, 80821390]

約数ペア:

[(1, 80821390), (2, 40410695), (5, 16164278), (10, 8082139), (13, 6217030), (26, 3108515), (65, 1243406), (130, 621703)]