18997745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{883}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 24652992

約数和(自身を除く): 5655247

約数列:

[1, 5, 13, 65, 331, 883, 1655, 4303, 4415, 11479, 21515, 57395, 292273, 1461365, 3799549, 18997745]

約数ペア:

[(1, 18997745), (5, 3799549), (13, 1461365), (65, 292273), (331, 57395), (883, 21515), (1655, 11479), (4303, 4415)]