18791073

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4201}}^1$

素因数の和:4285

約数の個数: 24

約数和(自身を含む): 31464576

約数和(自身を除く): 12673503

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4201, 4473, 12603, 29407, 37809, 88221, 264663, 298271, 894813, 2087897, 2684439, 6263691, 18791073]

約数ペア:

[(1, 18791073), (3, 6263691), (7, 2684439), (9, 2087897), (21, 894813), (63, 298271), (71, 264663), (213, 88221), (497, 37809), (639, 29407), (1491, 12603), (4201, 4473)]