19787080

素因数分解:

$2^3\times 5^1\times {\mathrm{494677}}^1$

素因数の和:494688

約数の個数: 16

約数和(自身を含む): 44521020

約数和(自身を除く): 24733940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 494677, 989354, 1978708, 2473385, 3957416, 4946770, 9893540, 19787080]

約数ペア:

[(1, 19787080), (2, 9893540), (4, 4946770), (5, 3957416), (8, 2473385), (10, 1978708), (20, 989354), (40, 494677)]