78890049

素因数分解:

$3^2\times 7^2\times {\mathrm{178889}}^1$

素因数の和:178909

約数の個数: 18

約数和(自身を含む): 132557490

約数和(自身を除く): 53667441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 178889, 536667, 1252223, 1610001, 3756669, 8765561, 11270007, 26296683, 78890049]

約数ペア:

[(1, 78890049), (3, 26296683), (7, 11270007), (9, 8765561), (21, 3756669), (49, 1610001), (63, 1252223), (147, 536667), (441, 178889)]