129441380

素因数分解:

$2^2\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{5021}}^1$

素因数の和:6319

約数の個数: 24

約数和(自身を含む): 272091960

約数和(自身を除く): 142650580

約数列:

[1, 2, 4, 5, 10, 20, 1289, 2578, 5021, 5156, 6445, 10042, 12890, 20084, 25105, 25780, 50210, 100420, 6472069, 12944138, 25888276, 32360345, 64720690, 129441380]

約数ペア:

[(1, 129441380), (2, 64720690), (4, 32360345), (5, 25888276), (10, 12944138), (20, 6472069), (1289, 100420), (2578, 50210), (5021, 25780), (5156, 25105), (6445, 20084), (10042, 12890)]