21209874

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 29351406

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 82, 109, 113, 123, 218, 226, 246, 287, 327, 339, 574, 654, 678, 763, 791, 861, 1526, 1582, 1722, 2289, 2373, 4469, 4578, 4633, 4746, 8938, 9266, 12317, 13407, 13899, 24634, 26814, 27798, 31283, 32431, 36951, 62566, 64862, 73902, 86219, 93849, 97293, 172438, 187698, 194586, 258657, 504997, 517314, 1009994, 1514991, 3029982, 3534979, 7069958, 10604937, 21209874]

約数ペア:

[(1, 21209874), (2, 10604937), (3, 7069958), (6, 3534979), (7, 3029982), (14, 1514991), (21, 1009994), (41, 517314), (42, 504997), (82, 258657), (109, 194586), (113, 187698), (123, 172438), (218, 97293), (226, 93849), (246, 86219), (287, 73902), (327, 64862), (339, 62566), (574, 36951), (654, 32431), (678, 31283), (763, 27798), (791, 26814), (861, 24634), (1526, 13899), (1582, 13407), (1722, 12317), (2289, 9266), (2373, 8938), (4469, 4746), (4578, 4633)]