20509569

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 33246720

約数和(自身を除く): 12737151

約数列:

[1, 3, 9, 19, 31, 53, 57, 73, 93, 159, 171, 219, 279, 477, 589, 657, 1007, 1387, 1643, 1767, 2263, 3021, 3869, 4161, 4929, 5301, 6789, 9063, 11607, 12483, 14787, 20367, 31217, 34821, 42997, 73511, 93651, 119939, 128991, 220533, 280953, 359817, 386973, 661599, 1079451, 2278841, 6836523, 20509569]

約数ペア:

[(1, 20509569), (3, 6836523), (9, 2278841), (19, 1079451), (31, 661599), (53, 386973), (57, 359817), (73, 280953), (93, 220533), (159, 128991), (171, 119939), (219, 93651), (279, 73511), (477, 42997), (589, 34821), (657, 31217), (1007, 20367), (1387, 14787), (1643, 12483), (1767, 11607), (2263, 9063), (3021, 6789), (3869, 5301), (4161, 4929)]