81390815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{87049}}^1$

素因数の和:87082

約数の個数: 16

約数和(自身を含む): 112816800

約数和(自身を除く): 31425985

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 87049, 435245, 957539, 1479833, 4787695, 7399165, 16278163, 81390815]

約数ペア:

[(1, 81390815), (5, 16278163), (11, 7399165), (17, 4787695), (55, 1479833), (85, 957539), (187, 435245), (935, 87049)]