20342889

素因数分解:

$3^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{283}}^1$

素因数の和:466

約数の個数: 36

約数和(自身を含む): 34512816

約数和(自身を除く): 14169927

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 163, 283, 441, 489, 849, 1141, 1467, 1981, 2547, 3423, 5943, 7987, 10269, 13867, 17829, 23961, 41601, 46129, 71883, 124803, 138387, 322903, 415161, 968709, 2260321, 2906127, 6780963, 20342889]

約数ペア:

[(1, 20342889), (3, 6780963), (7, 2906127), (9, 2260321), (21, 968709), (49, 415161), (63, 322903), (147, 138387), (163, 124803), (283, 71883), (441, 46129), (489, 41601), (849, 23961), (1141, 17829), (1467, 13867), (1981, 10269), (2547, 7987), (3423, 5943)]