28785589

素因数分解:

$7^4\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:678

約数の個数: 20

約数和(自身を含む): 35404640

約数和(自身を除く): 6619051

約数列:

[1, 7, 19, 49, 133, 343, 631, 931, 2401, 4417, 6517, 11989, 30919, 45619, 83923, 216433, 587461, 1515031, 4112227, 28785589]

約数ペア:

[(1, 28785589), (7, 4112227), (19, 1515031), (49, 587461), (133, 216433), (343, 83923), (631, 45619), (931, 30919), (2401, 11989), (4417, 6517)]