18886975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:387

約数の個数: 24

約数和(自身を含む): 24552000

約数和(自身を除く): 5665025

約数列:

[1, 5, 25, 29, 109, 145, 239, 545, 725, 1195, 2725, 3161, 5975, 6931, 15805, 26051, 34655, 79025, 130255, 173275, 651275, 755479, 3777395, 18886975]

約数ペア:

[(1, 18886975), (5, 3777395), (25, 755479), (29, 651275), (109, 173275), (145, 130255), (239, 79025), (545, 34655), (725, 26051), (1195, 15805), (2725, 6931), (3161, 5975)]