1990995040

素因数分解:

$2^5\times 5^1\times {\mathrm{12443719}}^1$

素因数の和:12443734

約数の個数: 24

約数和(自身を含む): 4703726160

約数和(自身を除く): 2712731120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 12443719, 24887438, 49774876, 62218595, 99549752, 124437190, 199099504, 248874380, 398199008, 497748760, 995497520, 1990995040]

約数ペア:

[(1, 1990995040), (2, 995497520), (4, 497748760), (5, 398199008), (8, 248874380), (10, 199099504), (16, 124437190), (20, 99549752), (32, 62218595), (40, 49774876), (80, 24887438), (160, 12443719)]