20907369

素因数分解:

$3^3\times 7^2\times {\mathrm{15803}}^1$

素因数の和:15826

約数の個数: 24

約数和(自身を含む): 36033120

約数和(自身を除く): 15125751

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15803, 47409, 110621, 142227, 331863, 426681, 774347, 995589, 2323041, 2986767, 6969123, 20907369]

約数ペア:

[(1, 20907369), (3, 6969123), (7, 2986767), (9, 2323041), (21, 995589), (27, 774347), (49, 426681), (63, 331863), (147, 142227), (189, 110621), (441, 47409), (1323, 15803)]