261566592020

素因数分解:

$2^2\times 5^1\times {\mathrm{13078329601}}^1$

素因数の和:13078329610

約数の個数: 12

約数和(自身を含む): 549289843284

約数和(自身を除く): 287723251264

約数列:

[1, 2, 4, 5, 10, 20, 13078329601, 26156659202, 52313318404, 65391648005, 130783296010, 261566592020]

約数ペア:

[(1, 261566592020), (2, 130783296010), (4, 65391648005), (5, 52313318404), (10, 26156659202), (20, 13078329601)]