19943860

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{2251}}^1$

素因数の和:2703

約数の個数: 24

約数和(自身を含む): 41995296

約数和(自身を除く): 22051436

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 2251, 4430, 4502, 8860, 9004, 11255, 22510, 45020, 997193, 1994386, 3988772, 4985965, 9971930, 19943860]

約数ペア:

[(1, 19943860), (2, 9971930), (4, 4985965), (5, 3988772), (10, 1994386), (20, 997193), (443, 45020), (886, 22510), (1772, 11255), (2215, 9004), (2251, 8860), (4430, 4502)]