643770127

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37831}}^1$

素因数の和:37879

約数の個数: 32

約数和(自身を含む): 915231744

約数和(自身を除く): 271461617

約数列:

[1, 7, 11, 13, 17, 77, 91, 119, 143, 187, 221, 1001, 1309, 1547, 2431, 17017, 37831, 264817, 416141, 491803, 643127, 2912987, 3442621, 4501889, 5409833, 7074397, 8360651, 37868831, 49520779, 58524557, 91967161, 643770127]

約数ペア:

[(1, 643770127), (7, 91967161), (11, 58524557), (13, 49520779), (17, 37868831), (77, 8360651), (91, 7074397), (119, 5409833), (143, 4501889), (187, 3442621), (221, 2912987), (1001, 643127), (1309, 491803), (1547, 416141), (2431, 264817), (17017, 37831)]