80806900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{19709}}^1$

素因数の和:19764

約数の個数: 36

約数和(自身を含む): 179636940

約数和(自身を除く): 98830040

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 19709, 39418, 78836, 98545, 197090, 394180, 492725, 808069, 985450, 1616138, 1970900, 3232276, 4040345, 8080690, 16161380, 20201725, 40403450, 80806900]

約数ペア:

[(1, 80806900), (2, 40403450), (4, 20201725), (5, 16161380), (10, 8080690), (20, 4040345), (25, 3232276), (41, 1970900), (50, 1616138), (82, 985450), (100, 808069), (164, 492725), (205, 394180), (410, 197090), (820, 98545), (1025, 78836), (2050, 39418), (4100, 19709)]