2017820720

素因数分解:

$2^4\times 5^1\times {\mathrm{1297}}^1\times {\mathrm{19447}}^1$

素因数の和:20757

約数の個数: 40

約数和(自身を含む): 4695291744

約数和(自身を除く): 2677471024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1297, 2594, 5188, 6485, 10376, 12970, 19447, 20752, 25940, 38894, 51880, 77788, 97235, 103760, 155576, 194470, 311152, 388940, 777880, 1555760, 25222759, 50445518, 100891036, 126113795, 201782072, 252227590, 403564144, 504455180, 1008910360, 2017820720]

約数ペア:

[(1, 2017820720), (2, 1008910360), (4, 504455180), (5, 403564144), (8, 252227590), (10, 201782072), (16, 126113795), (20, 100891036), (40, 50445518), (80, 25222759), (1297, 1555760), (2594, 777880), (5188, 388940), (6485, 311152), (10376, 194470), (12970, 155576), (19447, 103760), (20752, 97235), (25940, 77788), (38894, 51880)]