218977525

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{51829}}^1$

素因数の和:51865

約数の個数: 18

約数和(自身を含む): 294031590

約数和(自身を除く): 75054065

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 51829, 259145, 673777, 1295725, 3368885, 8759101, 16844425, 43795505, 218977525]

約数ペア:

[(1, 218977525), (5, 43795505), (13, 16844425), (25, 8759101), (65, 3368885), (169, 1295725), (325, 673777), (845, 259145), (4225, 51829)]