19210825

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 24641280

約数和(自身を除く): 5430455

約数列:

[1, 5, 25, 71, 79, 137, 355, 395, 685, 1775, 1975, 3425, 5609, 9727, 10823, 28045, 48635, 54115, 140225, 243175, 270575, 768433, 3842165, 19210825]

約数ペア:

[(1, 19210825), (5, 3842165), (25, 768433), (71, 270575), (79, 243175), (137, 140225), (355, 54115), (395, 48635), (685, 28045), (1775, 10823), (1975, 9727), (3425, 5609)]