21258454

素因数分解:

$2^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:282

約数の個数: 40

約数和(自身を含む): 39326040

約数和(自身を除く): 18067586

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 233, 266, 343, 466, 686, 931, 1631, 1862, 2401, 3262, 4427, 4802, 6517, 8854, 11417, 13034, 22834, 30989, 45619, 61978, 79919, 91238, 159838, 216923, 433846, 559433, 1118866, 1518461, 3036922, 10629227, 21258454]

約数ペア:

[(1, 21258454), (2, 10629227), (7, 3036922), (14, 1518461), (19, 1118866), (38, 559433), (49, 433846), (98, 216923), (133, 159838), (233, 91238), (266, 79919), (343, 61978), (466, 45619), (686, 30989), (931, 22834), (1631, 13034), (1862, 11417), (2401, 8854), (3262, 6517), (4427, 4802)]