199945525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{2221}}^1$

素因数の和:2521

約数の個数: 24

約数和(自身を含む): 268088744

約数和(自身を除く): 68143219

約数列:

[1, 5, 13, 25, 65, 277, 325, 1385, 2221, 3601, 6925, 11105, 18005, 28873, 55525, 90025, 144365, 615217, 721825, 3076085, 7997821, 15380425, 39989105, 199945525]

約数ペア:

[(1, 199945525), (5, 39989105), (13, 15380425), (25, 7997821), (65, 3076085), (277, 721825), (325, 615217), (1385, 144365), (2221, 90025), (3601, 55525), (6925, 28873), (11105, 18005)]