137970721

素因数分解:

$7^3\times {\mathrm{23}}^1\times {\mathrm{17489}}^1$

素因数の和:17533

約数の個数: 16

約数和(自身を含む): 167904000

約数和(自身を除く): 29933279

約数列:

[1, 7, 23, 49, 161, 343, 1127, 7889, 17489, 122423, 402247, 856961, 2815729, 5998727, 19710103, 137970721]

約数ペア:

[(1, 137970721), (7, 19710103), (23, 5998727), (49, 2815729), (161, 856961), (343, 402247), (1127, 122423), (7889, 17489)]