8728900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2129}}^1$

素因数の和:2184

約数の個数: 36

約数和(自身を含む): 19412820

約数和(自身を除く): 10683920

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 2129, 4100, 4258, 8516, 10645, 21290, 42580, 53225, 87289, 106450, 174578, 212900, 349156, 436445, 872890, 1745780, 2182225, 4364450, 8728900]

約数ペア:

[(1, 8728900), (2, 4364450), (4, 2182225), (5, 1745780), (10, 872890), (20, 436445), (25, 349156), (41, 212900), (50, 174578), (82, 106450), (100, 87289), (164, 53225), (205, 42580), (410, 21290), (820, 10645), (1025, 8516), (2050, 4258), (2129, 4100)]