20975875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{9871}}^1$

素因数の和:9903

約数の個数: 16

約数和(自身を含む): 27720576

約数和(自身を除く): 6744701

約数列:

[1, 5, 17, 25, 85, 125, 425, 2125, 9871, 49355, 167807, 246775, 839035, 1233875, 4195175, 20975875]

約数ペア:

[(1, 20975875), (5, 4195175), (17, 1233875), (25, 839035), (85, 246775), (125, 167807), (425, 49355), (2125, 9871)]