128325640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{31147}}^1$

素因数の和:31261

約数の個数: 32

約数和(自身を含む): 291545280

約数和(自身を除く): 163219640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 31147, 62294, 124588, 155735, 249176, 311470, 622940, 1245880, 3208141, 6416282, 12832564, 16040705, 25665128, 32081410, 64162820, 128325640]

約数ペア:

[(1, 128325640), (2, 64162820), (4, 32081410), (5, 25665128), (8, 16040705), (10, 12832564), (20, 6416282), (40, 3208141), (103, 1245880), (206, 622940), (412, 311470), (515, 249176), (824, 155735), (1030, 124588), (2060, 62294), (4120, 31147)]