28307279

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28279}}^1$

素因数の和:28310

約数の個数: 16

約数和(自身を含む): 38008320

約数和(自身を除く): 9701041

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 28279, 197953, 311069, 367627, 2177483, 2573389, 4043897, 28307279]

約数ペア:

[(1, 28307279), (7, 4043897), (11, 2573389), (13, 2177483), (77, 367627), (91, 311069), (143, 197953), (1001, 28279)]