81605900

素因数分解:

$2^2\times 5^2\times {\mathrm{709}}^1\times {\mathrm{1151}}^1$

素因数の和:1874

約数の個数: 36

約数和(自身を含む): 177488640

約数和(自身を除く): 95882740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 709, 1151, 1418, 2302, 2836, 3545, 4604, 5755, 7090, 11510, 14180, 17725, 23020, 28775, 35450, 57550, 70900, 115100, 816059, 1632118, 3264236, 4080295, 8160590, 16321180, 20401475, 40802950, 81605900]

約数ペア:

[(1, 81605900), (2, 40802950), (4, 20401475), (5, 16321180), (10, 8160590), (20, 4080295), (25, 3264236), (50, 1632118), (100, 816059), (709, 115100), (1151, 70900), (1418, 57550), (2302, 35450), (2836, 28775), (3545, 23020), (4604, 17725), (5755, 14180), (7090, 11510)]