39642280

素因数分解:

$2^3\times 5^1\times {\mathrm{991057}}^1$

素因数の和:991068

約数の個数: 16

約数和(自身を含む): 89195220

約数和(自身を除く): 49552940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991057, 1982114, 3964228, 4955285, 7928456, 9910570, 19821140, 39642280]

約数ペア:

[(1, 39642280), (2, 19821140), (4, 9910570), (5, 7928456), (8, 4955285), (10, 3964228), (20, 1982114), (40, 991057)]