20611100

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2609}}^1$

素因数の和:2702

約数の個数: 36

約数和(自身を含む): 45309600

約数和(自身を除く): 24698500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2609, 3950, 5218, 7900, 10436, 13045, 26090, 52180, 65225, 130450, 206111, 260900, 412222, 824444, 1030555, 2061110, 4122220, 5152775, 10305550, 20611100]

約数ペア:

[(1, 20611100), (2, 10305550), (4, 5152775), (5, 4122220), (10, 2061110), (20, 1030555), (25, 824444), (50, 412222), (79, 260900), (100, 206111), (158, 130450), (316, 65225), (395, 52180), (790, 26090), (1580, 13045), (1975, 10436), (2609, 7900), (3950, 5218)]