80289100

素因数分解:

$2^2\times 5^2\times {\mathrm{499}}^1\times {\mathrm{1609}}^1$

素因数の和:2122

約数の個数: 36

約数和(自身を含む): 174685000

約数和(自身を除く): 94395900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 499, 998, 1609, 1996, 2495, 3218, 4990, 6436, 8045, 9980, 12475, 16090, 24950, 32180, 40225, 49900, 80450, 160900, 802891, 1605782, 3211564, 4014455, 8028910, 16057820, 20072275, 40144550, 80289100]

約数ペア:

[(1, 80289100), (2, 40144550), (4, 20072275), (5, 16057820), (10, 8028910), (20, 4014455), (25, 3211564), (50, 1605782), (100, 802891), (499, 160900), (998, 80450), (1609, 49900), (1996, 40225), (2495, 32180), (3218, 24950), (4990, 16090), (6436, 12475), (8045, 9980)]