20371390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156703}}^1$

素因数の和:156723

約数の個数: 16

約数和(自身を含む): 39489408

約数和(自身を除く): 19118018

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 156703, 313406, 783515, 1567030, 2037139, 4074278, 10185695, 20371390]

約数ペア:

[(1, 20371390), (2, 10185695), (5, 4074278), (10, 2037139), (13, 1567030), (26, 783515), (65, 313406), (130, 156703)]