20921035

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{919}}^1$

素因数の和:1110

約数の個数: 16

約数和(自身を含む): 26164800

約数和(自身を除く): 5243765

約数列:

[1, 5, 29, 145, 157, 785, 919, 4553, 4595, 22765, 26651, 133255, 144283, 721415, 4184207, 20921035]

約数ペア:

[(1, 20921035), (5, 4184207), (29, 721415), (145, 144283), (157, 133255), (785, 26651), (919, 22765), (4553, 4595)]