638187854

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{18979}}^1$

素因数の和:19064

約数の個数: 32

約数和(自身を含む): 1082315520

約数和(自身を除く): 444127666

約数列:

[1, 2, 17, 23, 34, 43, 46, 86, 391, 731, 782, 989, 1462, 1978, 16813, 18979, 33626, 37958, 322643, 436517, 645286, 816097, 873034, 1632194, 7420789, 13873649, 14841578, 18770231, 27747298, 37540462, 319093927, 638187854]

約数ペア:

[(1, 638187854), (2, 319093927), (17, 37540462), (23, 27747298), (34, 18770231), (43, 14841578), (46, 13873649), (86, 7420789), (391, 1632194), (731, 873034), (782, 816097), (989, 645286), (1462, 436517), (1978, 322643), (16813, 37958), (18979, 33626)]