129642220

素因数分解:

$2^2\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{5021}}^1$

素因数の和:6321

約数の個数: 24

約数和(自身を含む): 272513808

約数和(自身を除く): 142871588

約数列:

[1, 2, 4, 5, 10, 20, 1291, 2582, 5021, 5164, 6455, 10042, 12910, 20084, 25105, 25820, 50210, 100420, 6482111, 12964222, 25928444, 32410555, 64821110, 129642220]

約数ペア:

[(1, 129642220), (2, 64821110), (4, 32410555), (5, 25928444), (10, 12964222), (20, 6482111), (1291, 100420), (2582, 50210), (5021, 25820), (5164, 25105), (6455, 20084), (10042, 12910)]