138486520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{84443}}^1$

素因数の和:84495

約数の個数: 32

約数和(自身を含む): 319198320

約数和(自身を除く): 180711800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 84443, 168886, 337772, 422215, 675544, 844430, 1688860, 3377720, 3462163, 6924326, 13848652, 17310815, 27697304, 34621630, 69243260, 138486520]

約数ペア:

[(1, 138486520), (2, 69243260), (4, 34621630), (5, 27697304), (8, 17310815), (10, 13848652), (20, 6924326), (40, 3462163), (41, 3377720), (82, 1688860), (164, 844430), (205, 675544), (328, 422215), (410, 337772), (820, 168886), (1640, 84443)]