81247568

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{123853}}^1$

素因数の和:123902

約数の個数: 20

約数和(自身を含む): 161257908

約数和(自身を除く): 80010340

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 123853, 247706, 495412, 990824, 1981648, 5077973, 10155946, 20311892, 40623784, 81247568]

約数ペア:

[(1, 81247568), (2, 40623784), (4, 20311892), (8, 10155946), (16, 5077973), (41, 1981648), (82, 990824), (164, 495412), (328, 247706), (656, 123853)]