2180255

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{809}}^1$

素因数の和:839

約数の個数: 24

約数和(自身を含む): 3324240

約数和(自身を除く): 1143985

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 809, 2695, 4045, 5663, 8899, 28315, 39641, 44495, 62293, 198205, 311465, 436051, 2180255]

約数ペア:

[(1, 2180255), (5, 436051), (7, 311465), (11, 198205), (35, 62293), (49, 44495), (55, 39641), (77, 28315), (245, 8899), (385, 5663), (539, 4045), (809, 2695)]