205121371

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1979}}^1$

素因数の和:2083

約数の個数: 32

約数和(自身を含む): 271434240

約数和(自身を除く): 66312869

約数列:

[1, 7, 13, 17, 67, 91, 119, 221, 469, 871, 1139, 1547, 1979, 6097, 7973, 13853, 14807, 25727, 33643, 103649, 132593, 180089, 235501, 437359, 928151, 1723709, 2254081, 3061513, 12065963, 15778567, 29303053, 205121371]

約数ペア:

[(1, 205121371), (7, 29303053), (13, 15778567), (17, 12065963), (67, 3061513), (91, 2254081), (119, 1723709), (221, 928151), (469, 437359), (871, 235501), (1139, 180089), (1547, 132593), (1979, 103649), (6097, 33643), (7973, 25727), (13853, 14807)]