87666520

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{20107}}^1$

素因数の和:20227

約数の個数: 32

約数和(自身を含む): 199069200

約数和(自身を除く): 111402680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 20107, 40214, 80428, 100535, 160856, 201070, 402140, 804280, 2191663, 4383326, 8766652, 10958315, 17533304, 21916630, 43833260, 87666520]

約数ペア:

[(1, 87666520), (2, 43833260), (4, 21916630), (5, 17533304), (8, 10958315), (10, 8766652), (20, 4383326), (40, 2191663), (109, 804280), (218, 402140), (436, 201070), (545, 160856), (872, 100535), (1090, 80428), (2180, 40214), (4360, 20107)]