21135231

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4201}}^1$

素因数の和:4263

約数の個数: 24

約数和(自身を含む): 33649616

約数和(自身を除く): 12514385

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4201, 5031, 12603, 37809, 54613, 163839, 180643, 491517, 541929, 1625787, 2348359, 7045077, 21135231]

約数ペア:

[(1, 21135231), (3, 7045077), (9, 2348359), (13, 1625787), (39, 541929), (43, 491517), (117, 180643), (129, 163839), (387, 54613), (559, 37809), (1677, 12603), (4201, 5031)]