8643620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 18966528

約数和(自身を除く): 10322908

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 83, 127, 164, 166, 205, 254, 332, 410, 415, 508, 635, 820, 830, 1270, 1660, 2540, 3403, 5207, 6806, 10414, 10541, 13612, 17015, 20828, 21082, 26035, 34030, 42164, 52070, 52705, 68060, 104140, 105410, 210820, 432181, 864362, 1728724, 2160905, 4321810, 8643620]

約数ペア:

[(1, 8643620), (2, 4321810), (4, 2160905), (5, 1728724), (10, 864362), (20, 432181), (41, 210820), (82, 105410), (83, 104140), (127, 68060), (164, 52705), (166, 52070), (205, 42164), (254, 34030), (332, 26035), (410, 21082), (415, 20828), (508, 17015), (635, 13612), (820, 10541), (830, 10414), (1270, 6806), (1660, 5207), (2540, 3403)]