21385925

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4093}}^1$

素因数の和:4133

約数の個数: 24

約数和(自身を含む): 30459360

約数和(自身を除く): 9073435

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 4093, 5225, 20465, 45023, 77767, 102325, 225115, 388835, 855437, 1125575, 1944175, 4277185, 21385925]

約数ペア:

[(1, 21385925), (5, 4277185), (11, 1944175), (19, 1125575), (25, 855437), (55, 388835), (95, 225115), (209, 102325), (275, 77767), (475, 45023), (1045, 20465), (4093, 5225)]