21488949

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1$

素因数の和:358

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 11627211

約数列:

[1, 3, 9, 27, 43, 83, 129, 223, 249, 387, 669, 747, 1161, 2007, 2241, 3569, 6021, 9589, 10707, 18509, 28767, 32121, 55527, 86301, 96363, 166581, 258903, 499743, 795887, 2387661, 7162983, 21488949]

約数ペア:

[(1, 21488949), (3, 7162983), (9, 2387661), (27, 795887), (43, 499743), (83, 258903), (129, 166581), (223, 96363), (249, 86301), (387, 55527), (669, 32121), (747, 28767), (1161, 18509), (2007, 10707), (2241, 9589), (3569, 6021)]