20641575

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1753}}^1$

素因数の和:1923

約数の個数: 24

約数和(自身を含む): 34364368

約数和(自身を除く): 13722793

約数列:

[1, 3, 5, 15, 25, 75, 157, 471, 785, 1753, 2355, 3925, 5259, 8765, 11775, 26295, 43825, 131475, 275221, 825663, 1376105, 4128315, 6880525, 20641575]

約数ペア:

[(1, 20641575), (3, 6880525), (5, 4128315), (15, 1376105), (25, 825663), (75, 275221), (157, 131475), (471, 43825), (785, 26295), (1753, 11775), (2355, 8765), (3925, 5259)]