129439816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{20717}}^1$

素因数の和:20805

約数の個数: 32

約数和(自身を含む): 268505280

約数和(自身を除く): 139065464

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 142, 284, 568, 781, 1562, 3124, 6248, 20717, 41434, 82868, 165736, 227887, 455774, 911548, 1470907, 1823096, 2941814, 5883628, 11767256, 16179977, 32359954, 64719908, 129439816]

約数ペア:

[(1, 129439816), (2, 64719908), (4, 32359954), (8, 16179977), (11, 11767256), (22, 5883628), (44, 2941814), (71, 1823096), (88, 1470907), (142, 911548), (284, 455774), (568, 227887), (781, 165736), (1562, 82868), (3124, 41434), (6248, 20717)]