20613813

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 31257600

約数和(自身を除く): 10643787

約数列:

[1, 3, 11, 33, 43, 73, 129, 199, 219, 473, 597, 803, 1419, 2189, 2409, 3139, 6567, 8557, 9417, 14527, 25671, 34529, 43581, 94127, 103587, 159797, 282381, 479391, 624661, 1873983, 6871271, 20613813]

約数ペア:

[(1, 20613813), (3, 6871271), (11, 1873983), (33, 624661), (43, 479391), (73, 282381), (129, 159797), (199, 103587), (219, 94127), (473, 43581), (597, 34529), (803, 25671), (1419, 14527), (2189, 9417), (2409, 8557), (3139, 6567)]