20007080

素因数分解:

$2^3\times 5^1\times {\mathrm{500177}}^1$

素因数の和:500188

約数の個数: 16

約数和(自身を含む): 45016020

約数和(自身を除く): 25008940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 500177, 1000354, 2000708, 2500885, 4001416, 5001770, 10003540, 20007080]

約数ペア:

[(1, 20007080), (2, 10003540), (4, 5001770), (5, 4001416), (8, 2500885), (10, 2000708), (20, 1000354), (40, 500177)]