20975517

素因数分解:

$3^8\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:186

約数の個数: 36

約数和(自身を含む): 33065760

約数和(自身を除く): 12090243

約数列:

[1, 3, 9, 23, 27, 69, 81, 139, 207, 243, 417, 621, 729, 1251, 1863, 2187, 3197, 3753, 5589, 6561, 9591, 11259, 16767, 28773, 33777, 50301, 86319, 101331, 150903, 258957, 303993, 776871, 911979, 2330613, 6991839, 20975517]

約数ペア:

[(1, 20975517), (3, 6991839), (9, 2330613), (23, 911979), (27, 776871), (69, 303993), (81, 258957), (139, 150903), (207, 101331), (243, 86319), (417, 50301), (621, 33777), (729, 28773), (1251, 16767), (1863, 11259), (2187, 9591), (3197, 6561), (3753, 5589)]