21803740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155741}}^1$

素因数の和:155757

約数の個数: 24

約数和(自身を含む): 52329312

約数和(自身を除く): 30525572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155741, 311482, 622964, 778705, 1090187, 1557410, 2180374, 3114820, 4360748, 5450935, 10901870, 21803740]

約数ペア:

[(1, 21803740), (2, 10901870), (4, 5450935), (5, 4360748), (7, 3114820), (10, 2180374), (14, 1557410), (20, 1090187), (28, 778705), (35, 622964), (70, 311482), (140, 155741)]