20699021

素因数分解:

$7^4\times {\mathrm{37}}^1\times {\mathrm{233}}^1$

素因数の和:298

約数の個数: 20

約数和(自身を含む): 24906492

約数和(自身を除く): 4207471

約数列:

[1, 7, 37, 49, 233, 259, 343, 1631, 1813, 2401, 8621, 11417, 12691, 60347, 79919, 88837, 422429, 559433, 2957003, 20699021]

約数ペア:

[(1, 20699021), (7, 2957003), (37, 559433), (49, 422429), (233, 88837), (259, 79919), (343, 60347), (1631, 12691), (1813, 11417), (2401, 8621)]