20654525

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{919}}^1$

素因数の和:989

約数の個数: 24

約数和(自身を含む): 27379200

約数和(自身を除く): 6724675

約数列:

[1, 5, 25, 29, 31, 145, 155, 725, 775, 899, 919, 4495, 4595, 22475, 22975, 26651, 28489, 133255, 142445, 666275, 712225, 826181, 4130905, 20654525]

約数ペア:

[(1, 20654525), (5, 4130905), (25, 826181), (29, 712225), (31, 666275), (145, 142445), (155, 133255), (725, 28489), (775, 26651), (899, 22975), (919, 22475), (4495, 4595)]