280057880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{170767}}^1$

素因数の和:170819

約数の個数: 32

約数和(自身を含む): 645503040

約数和(自身を除く): 365445160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 170767, 341534, 683068, 853835, 1366136, 1707670, 3415340, 6830680, 7001447, 14002894, 28005788, 35007235, 56011576, 70014470, 140028940, 280057880]

約数ペア:

[(1, 280057880), (2, 140028940), (4, 70014470), (5, 56011576), (8, 35007235), (10, 28005788), (20, 14002894), (40, 7001447), (41, 6830680), (82, 3415340), (164, 1707670), (205, 1366136), (328, 853835), (410, 683068), (820, 341534), (1640, 170767)]