129108400

素因数分解:

$2^4\times 5^2\times {\mathrm{322771}}^1$

素因数の和:322789

約数の個数: 30

約数和(自身を含む): 310183892

約数和(自身を除く): 181075492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 322771, 645542, 1291084, 1613855, 2582168, 3227710, 5164336, 6455420, 8069275, 12910840, 16138550, 25821680, 32277100, 64554200, 129108400]

約数ペア:

[(1, 129108400), (2, 64554200), (4, 32277100), (5, 25821680), (8, 16138550), (10, 12910840), (16, 8069275), (20, 6455420), (25, 5164336), (40, 3227710), (50, 2582168), (80, 1613855), (100, 1291084), (200, 645542), (400, 322771)]