19943080

素因数分解:

$2^3\times 5^1\times {\mathrm{498577}}^1$

素因数の和:498588

約数の個数: 16

約数和(自身を含む): 44872020

約数和(自身を除く): 24928940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 498577, 997154, 1994308, 2492885, 3988616, 4985770, 9971540, 19943080]

約数ペア:

[(1, 19943080), (2, 9971540), (4, 4985770), (5, 3988616), (8, 2492885), (10, 1994308), (20, 997154), (40, 498577)]