20996957540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80757529}}^1$

素因数の和:80757551

約数の個数: 24

約数和(自身を含む): 47485427640

約数和(自身を除く): 26488470100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80757529, 161515058, 323030116, 403787645, 807575290, 1049847877, 1615150580, 2099695754, 4199391508, 5249239385, 10498478770, 20996957540]

約数ペア:

[(1, 20996957540), (2, 10498478770), (4, 5249239385), (5, 4199391508), (10, 2099695754), (13, 1615150580), (20, 1049847877), (26, 807575290), (52, 403787645), (65, 323030116), (130, 161515058), (260, 80757529)]