28345525

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{6709}}^1$

素因数の和:6745

約数の個数: 18

約数和(自身を含む): 38065830

約数和(自身を除く): 9720305

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 6709, 33545, 87217, 167725, 436085, 1133821, 2180425, 5669105, 28345525]

約数ペア:

[(1, 28345525), (5, 5669105), (13, 2180425), (25, 1133821), (65, 436085), (169, 167725), (325, 87217), (845, 33545), (4225, 6709)]