19205975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 25110000

約数和(自身を除く): 5904025

約数列:

[1, 5, 25, 29, 59, 145, 295, 449, 725, 1475, 1711, 2245, 8555, 11225, 13021, 26491, 42775, 65105, 132455, 325525, 662275, 768239, 3841195, 19205975]

約数ペア:

[(1, 19205975), (5, 3841195), (25, 768239), (29, 662275), (59, 325525), (145, 132455), (295, 65105), (449, 42775), (725, 26491), (1475, 13021), (1711, 11225), (2245, 8555)]