20007999

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 35251200

約数和(自身を除く): 15243201

約数列:

[1, 3, 9, 11, 23, 27, 29, 33, 69, 87, 99, 101, 207, 253, 261, 297, 303, 319, 621, 667, 759, 783, 909, 957, 1111, 2001, 2277, 2323, 2727, 2871, 2929, 3333, 6003, 6831, 6969, 7337, 8613, 8787, 9999, 18009, 20907, 22011, 25553, 26361, 29997, 32219, 62721, 66033, 67367, 76659, 79083, 96657, 198099, 202101, 229977, 289971, 606303, 689931, 741037, 869913, 1818909, 2223111, 6669333, 20007999]

約数ペア:

[(1, 20007999), (3, 6669333), (9, 2223111), (11, 1818909), (23, 869913), (27, 741037), (29, 689931), (33, 606303), (69, 289971), (87, 229977), (99, 202101), (101, 198099), (207, 96657), (253, 79083), (261, 76659), (297, 67367), (303, 66033), (319, 62721), (621, 32219), (667, 29997), (759, 26361), (783, 25553), (909, 22011), (957, 20907), (1111, 18009), (2001, 9999), (2277, 8787), (2323, 8613), (2727, 7337), (2871, 6969), (2929, 6831), (3333, 6003)]