217208560

素因数分解:

$2^4\times 5^1\times {\mathrm{887}}^1\times {\mathrm{3061}}^1$

素因数の和:3961

約数の個数: 40

約数和(自身を含む): 505744416

約数和(自身を除く): 288535856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 887, 1774, 3061, 3548, 4435, 6122, 7096, 8870, 12244, 14192, 15305, 17740, 24488, 30610, 35480, 48976, 61220, 70960, 122440, 244880, 2715107, 5430214, 10860428, 13575535, 21720856, 27151070, 43441712, 54302140, 108604280, 217208560]

約数ペア:

[(1, 217208560), (2, 108604280), (4, 54302140), (5, 43441712), (8, 27151070), (10, 21720856), (16, 13575535), (20, 10860428), (40, 5430214), (80, 2715107), (887, 244880), (1774, 122440), (3061, 70960), (3548, 61220), (4435, 48976), (6122, 35480), (7096, 30610), (8870, 24488), (12244, 17740), (14192, 15305)]