2665640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 6065280

約数和(自身を除く): 3399640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 647, 824, 1030, 1294, 2060, 2588, 3235, 4120, 5176, 6470, 12940, 25880, 66641, 133282, 266564, 333205, 533128, 666410, 1332820, 2665640]

約数ペア:

[(1, 2665640), (2, 1332820), (4, 666410), (5, 533128), (8, 333205), (10, 266564), (20, 133282), (40, 66641), (103, 25880), (206, 12940), (412, 6470), (515, 5176), (647, 4120), (824, 3235), (1030, 2588), (1294, 2060)]