2051215780

素因数分解:

$2^2\times 5^1\times {\mathrm{102560789}}^1$

素因数の和:102560798

約数の個数: 12

約数和(自身を含む): 4307553180

約数和(自身を除く): 2256337400

約数列:

[1, 2, 4, 5, 10, 20, 102560789, 205121578, 410243156, 512803945, 1025607890, 2051215780]

約数ペア:

[(1, 2051215780), (2, 1025607890), (4, 512803945), (5, 410243156), (10, 205121578), (20, 102560789)]