20640802575

素因数分解:

$3^1\times 5^2\times {\mathrm{509}}^1\times {\mathrm{540689}}^1$

素因数の和:541211

約数の個数: 24

約数和(自身を含む): 34193235600

約数和(自身を除く): 13552433025

約数列:

[1, 3, 5, 15, 25, 75, 509, 1527, 2545, 7635, 12725, 38175, 540689, 1622067, 2703445, 8110335, 13517225, 40551675, 275210701, 825632103, 1376053505, 4128160515, 6880267525, 20640802575]

約数ペア:

[(1, 20640802575), (3, 6880267525), (5, 4128160515), (15, 1376053505), (25, 825632103), (75, 275210701), (509, 40551675), (1527, 13517225), (2545, 8110335), (7635, 2703445), (12725, 1622067), (38175, 540689)]