20530856

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 39900000

約数和(自身を除く): 19369144

約数列:

[1, 2, 4, 8, 37, 74, 139, 148, 278, 296, 499, 556, 998, 1112, 1996, 3992, 5143, 10286, 18463, 20572, 36926, 41144, 69361, 73852, 138722, 147704, 277444, 554888, 2566357, 5132714, 10265428, 20530856]

約数ペア:

[(1, 20530856), (2, 10265428), (4, 5132714), (8, 2566357), (37, 554888), (74, 277444), (139, 147704), (148, 138722), (278, 73852), (296, 69361), (499, 41144), (556, 36926), (998, 20572), (1112, 18463), (1996, 10286), (3992, 5143)]