18941390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{145703}}^1$

素因数の和:145723

約数の個数: 16

約数和(自身を含む): 36717408

約数和(自身を除く): 17776018

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 145703, 291406, 728515, 1457030, 1894139, 3788278, 9470695, 18941390]

約数ペア:

[(1, 18941390), (2, 9470695), (5, 3788278), (10, 1894139), (13, 1457030), (26, 728515), (65, 291406), (130, 145703)]