19907080

素因数分解:

$2^3\times 5^1\times {\mathrm{497677}}^1$

素因数の和:497688

約数の個数: 16

約数和(自身を含む): 44791020

約数和(自身を除く): 24883940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497677, 995354, 1990708, 2488385, 3981416, 4976770, 9953540, 19907080]

約数ペア:

[(1, 19907080), (2, 9953540), (4, 4976770), (5, 3981416), (8, 2488385), (10, 1990708), (20, 995354), (40, 497677)]