20903180

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{2287}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 44011968

約数和(自身を除く): 23108788

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 2287, 4570, 4574, 9140, 9148, 11435, 22870, 45740, 1045159, 2090318, 4180636, 5225795, 10451590, 20903180]

約数ペア:

[(1, 20903180), (2, 10451590), (4, 5225795), (5, 4180636), (10, 2090318), (20, 1045159), (457, 45740), (914, 22870), (1828, 11435), (2285, 9148), (2287, 9140), (4570, 4574)]