20681703

素因数分解:

$3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{1499}}^1$

素因数の和:1588

約数の個数: 32

約数和(自身を含む): 35520000

約数和(自身を除く): 14838297

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 189, 219, 511, 657, 1499, 1533, 1971, 4497, 4599, 10493, 13491, 13797, 31479, 40473, 94437, 109427, 283311, 328281, 765989, 984843, 2297967, 2954529, 6893901, 20681703]

約数ペア:

[(1, 20681703), (3, 6893901), (7, 2954529), (9, 2297967), (21, 984843), (27, 765989), (63, 328281), (73, 283311), (189, 109427), (219, 94437), (511, 40473), (657, 31479), (1499, 13797), (1533, 13491), (1971, 10493), (4497, 4599)]