81199504

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{20219}}^1$

素因数の和:20478

約数の個数: 20

約数和(自身を含む): 157958640

約数和(自身を除く): 76759136

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 20219, 40438, 80876, 161752, 323504, 5074969, 10149938, 20299876, 40599752, 81199504]

約数ペア:

[(1, 81199504), (2, 40599752), (4, 20299876), (8, 10149938), (16, 5074969), (251, 323504), (502, 161752), (1004, 80876), (2008, 40438), (4016, 20219)]