13156525

素因数分解:

$5^2\times {\mathrm{641}}^1\times {\mathrm{821}}^1$

素因数の和:1472

約数の個数: 12

約数和(自身を含む): 16359444

約数和(自身を除く): 3202919

約数列:

[1, 5, 25, 641, 821, 3205, 4105, 16025, 20525, 526261, 2631305, 13156525]

約数ペア:

[(1, 13156525), (5, 2631305), (25, 526261), (641, 20525), (821, 16025), (3205, 4105)]