20954619

素因数分解:

$3^5\times 7^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 36528128

約数和(自身を除く): 15573509

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 97, 127, 189, 243, 291, 381, 567, 679, 873, 889, 1143, 1701, 2037, 2619, 2667, 3429, 6111, 7857, 8001, 10287, 12319, 18333, 23571, 24003, 30861, 36957, 54999, 72009, 86233, 110871, 164997, 216027, 258699, 332613, 776097, 997839, 2328291, 2993517, 6984873, 20954619]

約数ペア:

[(1, 20954619), (3, 6984873), (7, 2993517), (9, 2328291), (21, 997839), (27, 776097), (63, 332613), (81, 258699), (97, 216027), (127, 164997), (189, 110871), (243, 86233), (291, 72009), (381, 54999), (567, 36957), (679, 30861), (873, 24003), (889, 23571), (1143, 18333), (1701, 12319), (2037, 10287), (2619, 8001), (2667, 7857), (3429, 6111)]