20904154

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1\times {\mathrm{991}}^1$

素因数の和:1245

約数の個数: 16

約数和(自身を含む): 32140800

約数和(自身を除く): 11236646

約数列:

[1, 2, 53, 106, 199, 398, 991, 1982, 10547, 21094, 52523, 105046, 197209, 394418, 10452077, 20904154]

約数ペア:

[(1, 20904154), (2, 10452077), (53, 394418), (106, 197209), (199, 105046), (398, 52523), (991, 21094), (1982, 10547)]