20156125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:270

約数の個数: 32

約数和(自身を含む): 27900288

約数和(自身を除く): 7744163

約数列:

[1, 5, 11, 25, 55, 107, 125, 137, 275, 535, 685, 1177, 1375, 1507, 2675, 3425, 5885, 7535, 13375, 14659, 17125, 29425, 37675, 73295, 147125, 161249, 188375, 366475, 806245, 1832375, 4031225, 20156125]

約数ペア:

[(1, 20156125), (5, 4031225), (11, 1832375), (25, 806245), (55, 366475), (107, 188375), (125, 161249), (137, 147125), (275, 73295), (535, 37675), (685, 29425), (1177, 17125), (1375, 14659), (1507, 13375), (2675, 7535), (3425, 5885)]