8640820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{22739}}^1$

素因数の和:22767

約数の個数: 24

約数和(自身を含む): 19101600

約数和(自身を除く): 10460780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 22739, 45478, 90956, 113695, 227390, 432041, 454780, 864082, 1728164, 2160205, 4320410, 8640820]

約数ペア:

[(1, 8640820), (2, 4320410), (4, 2160205), (5, 1728164), (10, 864082), (19, 454780), (20, 432041), (38, 227390), (76, 113695), (95, 90956), (190, 45478), (380, 22739)]