20039080

素因数分解:

$2^3\times 5^1\times {\mathrm{500977}}^1$

素因数の和:500988

約数の個数: 16

約数和(自身を含む): 45088020

約数和(自身を除く): 25048940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 500977, 1001954, 2003908, 2504885, 4007816, 5009770, 10019540, 20039080]

約数ペア:

[(1, 20039080), (2, 10019540), (4, 5009770), (5, 4007816), (8, 2504885), (10, 2003908), (20, 1001954), (40, 500977)]