21327260

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{2137}}^1$

素因数の和:2645

約数の個数: 24

約数和(自身を含む): 44898000

約数和(自身を除く): 23570740

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2137, 2495, 4274, 4990, 8548, 9980, 10685, 21370, 42740, 1066363, 2132726, 4265452, 5331815, 10663630, 21327260]

約数ペア:

[(1, 21327260), (2, 10663630), (4, 5331815), (5, 4265452), (10, 2132726), (20, 1066363), (499, 42740), (998, 21370), (1996, 10685), (2137, 9980), (2495, 8548), (4274, 4990)]