20574765

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 37769472

約数和(自身を除く): 17194707

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 103, 115, 193, 207, 309, 345, 515, 579, 927, 965, 1035, 1545, 1737, 2369, 2895, 4439, 4635, 7107, 8685, 11845, 13317, 19879, 21321, 22195, 35535, 39951, 59637, 66585, 99395, 106605, 178911, 199755, 298185, 457217, 894555, 1371651, 2286085, 4114953, 6858255, 20574765]

約数ペア:

[(1, 20574765), (3, 6858255), (5, 4114953), (9, 2286085), (15, 1371651), (23, 894555), (45, 457217), (69, 298185), (103, 199755), (115, 178911), (193, 106605), (207, 99395), (309, 66585), (345, 59637), (515, 39951), (579, 35535), (927, 22195), (965, 21321), (1035, 19879), (1545, 13317), (1737, 11845), (2369, 8685), (2895, 7107), (4439, 4635)]