21465729

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6163}}^1$

素因数の和:6218

約数の個数: 20

約数和(自身を含む): 32817136

約数和(自身を除く): 11351407

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6163, 18489, 55467, 166401, 265009, 499203, 795027, 2385081, 7155243, 21465729]

約数ペア:

[(1, 21465729), (3, 7155243), (9, 2385081), (27, 795027), (43, 499203), (81, 265009), (129, 166401), (387, 55467), (1161, 18489), (3483, 6163)]