81970576

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{20411}}^1$

素因数の和:20670

約数の個数: 20

約数和(自身を含む): 159458544

約数和(自身を除く): 77487968

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 20411, 40822, 81644, 163288, 326576, 5123161, 10246322, 20492644, 40985288, 81970576]

約数ペア:

[(1, 81970576), (2, 40985288), (4, 20492644), (8, 10246322), (16, 5123161), (251, 326576), (502, 163288), (1004, 81644), (2008, 40822), (4016, 20411)]