2798740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19991}}^1$

素因数の和:20007

約数の個数: 24

約数和(自身を含む): 6717312

約数和(自身を除く): 3918572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 19991, 39982, 79964, 99955, 139937, 199910, 279874, 399820, 559748, 699685, 1399370, 2798740]

約数ペア:

[(1, 2798740), (2, 1399370), (4, 699685), (5, 559748), (7, 399820), (10, 279874), (14, 199910), (20, 139937), (28, 99955), (35, 79964), (70, 39982), (140, 19991)]