122721039

素因数分解:

$3^2\times 7^2\times {\mathrm{278279}}^1$

素因数の和:278299

約数の個数: 18

約数和(自身を含む): 206205480

約数和(自身を除く): 83484441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 278279, 834837, 1947953, 2504511, 5843859, 13635671, 17531577, 40907013, 122721039]

約数ペア:

[(1, 122721039), (3, 40907013), (7, 17531577), (9, 13635671), (21, 5843859), (49, 2504511), (63, 1947953), (147, 834837), (441, 278279)]