19987525

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1451}}^1$

素因数の和:1509

約数の個数: 24

約数和(自身を含む): 27007200

約数和(自身を除く): 7019675

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1451, 2755, 7255, 13775, 27569, 36275, 42079, 137845, 210395, 689225, 799501, 1051975, 3997505, 19987525]

約数ペア:

[(1, 19987525), (5, 3997505), (19, 1051975), (25, 799501), (29, 689225), (95, 210395), (145, 137845), (475, 42079), (551, 36275), (725, 27569), (1451, 13775), (2755, 7255)]