18907889

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1453}}^1$

素因数の和:1497

約数の個数: 24

約数和(自身を含む): 25543872

約数和(自身を除く): 6635983

約数列:

[1, 7, 11, 13, 77, 91, 143, 169, 1001, 1183, 1453, 1859, 10171, 13013, 15983, 18889, 111881, 132223, 207779, 245557, 1454453, 1718899, 2701127, 18907889]

約数ペア:

[(1, 18907889), (7, 2701127), (11, 1718899), (13, 1454453), (77, 245557), (91, 207779), (143, 132223), (169, 111881), (1001, 18889), (1183, 15983), (1453, 13013), (1859, 10171)]