20877818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25903}}^1$

素因数の和:25949

約数の個数: 16

約数和(自身を含む): 34814976

約数和(自身を除く): 13937158

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 25903, 51806, 336739, 673478, 802993, 1605986, 10438909, 20877818]

約数ペア:

[(1, 20877818), (2, 10438909), (13, 1605986), (26, 802993), (31, 673478), (62, 336739), (403, 51806), (806, 25903)]