18510680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11287}}^1$

素因数の和:11339

約数の個数: 32

約数和(自身を含む): 42668640

約数和(自身を除く): 24157960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11287, 22574, 45148, 56435, 90296, 112870, 225740, 451480, 462767, 925534, 1851068, 2313835, 3702136, 4627670, 9255340, 18510680]

約数ペア:

[(1, 18510680), (2, 9255340), (4, 4627670), (5, 3702136), (8, 2313835), (10, 1851068), (20, 925534), (40, 462767), (41, 451480), (82, 225740), (164, 112870), (205, 90296), (328, 56435), (410, 45148), (820, 22574), (1640, 11287)]