81265768

素因数分解:

$2^3\times {\mathrm{251}}^1\times {\mathrm{40471}}^1$

素因数の和:40728

約数の個数: 16

約数和(自身を含む): 152984160

約数和(自身を除く): 71718392

約数列:

[1, 2, 4, 8, 251, 502, 1004, 2008, 40471, 80942, 161884, 323768, 10158221, 20316442, 40632884, 81265768]

約数ペア:

[(1, 81265768), (2, 40632884), (4, 20316442), (8, 10158221), (251, 323768), (502, 161884), (1004, 80942), (2008, 40471)]