640915422

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{139999}}^1$

素因数の和:140120

約数の個数: 32

約数和(自身を含む): 1478400000

約数和(自身を除く): 837484578

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 109, 218, 327, 654, 763, 1526, 2289, 4578, 139999, 279998, 419997, 839994, 979993, 1959986, 2939979, 5879958, 15259891, 30519782, 45779673, 91559346, 106819237, 213638474, 320457711, 640915422]

約数ペア:

[(1, 640915422), (2, 320457711), (3, 213638474), (6, 106819237), (7, 91559346), (14, 45779673), (21, 30519782), (42, 15259891), (109, 5879958), (218, 2939979), (327, 1959986), (654, 979993), (763, 839994), (1526, 419997), (2289, 279998), (4578, 139999)]