290480900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{70849}}^1$

素因数の和:70904

約数の個数: 36

約数和(自身を含む): 645726900

約数和(自身を除く): 355246000

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 70849, 141698, 283396, 354245, 708490, 1416980, 1771225, 2904809, 3542450, 5809618, 7084900, 11619236, 14524045, 29048090, 58096180, 72620225, 145240450, 290480900]

約数ペア:

[(1, 290480900), (2, 145240450), (4, 72620225), (5, 58096180), (10, 29048090), (20, 14524045), (25, 11619236), (41, 7084900), (50, 5809618), (82, 3542450), (100, 2904809), (164, 1771225), (205, 1416980), (410, 708490), (820, 354245), (1025, 283396), (2050, 141698), (4100, 70849)]