28004825

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 36009600

約数和(自身を除く): 8004775

約数列:

[1, 5, 25, 43, 109, 215, 239, 545, 1075, 1195, 2725, 4687, 5975, 10277, 23435, 26051, 51385, 117175, 130255, 256925, 651275, 1120193, 5600965, 28004825]

約数ペア:

[(1, 28004825), (5, 5600965), (25, 1120193), (43, 651275), (109, 256925), (215, 130255), (239, 117175), (545, 51385), (1075, 26051), (1195, 23435), (2725, 10277), (4687, 5975)]