21181375

素因数分解:

$5^3\times {\mathrm{239}}^1\times {\mathrm{709}}^1$

素因数の和:963

約数の個数: 16

約数和(自身を含む): 26582400

約数和(自身を除く): 5401025

約数列:

[1, 5, 25, 125, 239, 709, 1195, 3545, 5975, 17725, 29875, 88625, 169451, 847255, 4236275, 21181375]

約数ペア:

[(1, 21181375), (5, 4236275), (25, 847255), (125, 169451), (239, 88625), (709, 29875), (1195, 17725), (3545, 5975)]