18933820

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2137}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 39869424

約数和(自身を除く): 20935604

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2137, 2215, 4274, 4430, 8548, 8860, 10685, 21370, 42740, 946691, 1893382, 3786764, 4733455, 9466910, 18933820]

約数ペア:

[(1, 18933820), (2, 9466910), (4, 4733455), (5, 3786764), (10, 1893382), (20, 946691), (443, 42740), (886, 21370), (1772, 10685), (2137, 8860), (2215, 8548), (4274, 4430)]