19999818

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 47491200

約数和(自身を除く): 27491382

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 101, 114, 171, 193, 202, 303, 342, 386, 513, 579, 606, 909, 1026, 1158, 1737, 1818, 1919, 2727, 3474, 3667, 3838, 5211, 5454, 5757, 7334, 10422, 11001, 11514, 17271, 19493, 22002, 33003, 34542, 38986, 51813, 58479, 66006, 99009, 103626, 116958, 175437, 198018, 350874, 370367, 526311, 740734, 1052622, 1111101, 2222202, 3333303, 6666606, 9999909, 19999818]

約数ペア:

[(1, 19999818), (2, 9999909), (3, 6666606), (6, 3333303), (9, 2222202), (18, 1111101), (19, 1052622), (27, 740734), (38, 526311), (54, 370367), (57, 350874), (101, 198018), (114, 175437), (171, 116958), (193, 103626), (202, 99009), (303, 66006), (342, 58479), (386, 51813), (513, 38986), (579, 34542), (606, 33003), (909, 22002), (1026, 19493), (1158, 17271), (1737, 11514), (1818, 11001), (1919, 10422), (2727, 7334), (3474, 5757), (3667, 5454), (3838, 5211)]