19818425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3793}}^1$

素因数の和:3833

約数の個数: 24

約数和(自身を含む): 28227360

約数和(自身を除く): 8408935

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 3793, 5225, 18965, 41723, 72067, 94825, 208615, 360335, 792737, 1043075, 1801675, 3963685, 19818425]

約数ペア:

[(1, 19818425), (5, 3963685), (11, 1801675), (19, 1043075), (25, 792737), (55, 360335), (95, 208615), (209, 94825), (275, 72067), (475, 41723), (1045, 18965), (3793, 5225)]