20995005

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 34504704

約数和(自身を除く): 13509699

約数列:

[1, 3, 5, 15, 103, 107, 127, 309, 321, 381, 515, 535, 635, 1545, 1605, 1905, 11021, 13081, 13589, 33063, 39243, 40767, 55105, 65405, 67945, 165315, 196215, 203835, 1399667, 4199001, 6998335, 20995005]

約数ペア:

[(1, 20995005), (3, 6998335), (5, 4199001), (15, 1399667), (103, 203835), (107, 196215), (127, 165315), (309, 67945), (321, 65405), (381, 55105), (515, 40767), (535, 39243), (635, 33063), (1545, 13589), (1605, 13081), (1905, 11021)]