128590945

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{16931}}^1$

素因数の和:16981

約数の個数: 24

約数和(自身を含む): 185303808

約数和(自身を除く): 56712863

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 7595, 16931, 84655, 118517, 524861, 592585, 829619, 2624305, 3674027, 4148095, 18370135, 25718189, 128590945]

約数ペア:

[(1, 128590945), (5, 25718189), (7, 18370135), (31, 4148095), (35, 3674027), (49, 2624305), (155, 829619), (217, 592585), (245, 524861), (1085, 118517), (1519, 84655), (7595, 16931)]