20765241

素因数分解:

$3^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{691}}^1$

素因数の和:763

約数の個数: 40

約数和(自身を含む): 36172224

約数和(自身を除く): 15406983

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 81, 159, 189, 371, 477, 567, 691, 1113, 1431, 2073, 3339, 4293, 4837, 6219, 10017, 14511, 18657, 30051, 36623, 43533, 55971, 109869, 130599, 256361, 329607, 391797, 769083, 988821, 2307249, 2966463, 6921747, 20765241]

約数ペア:

[(1, 20765241), (3, 6921747), (7, 2966463), (9, 2307249), (21, 988821), (27, 769083), (53, 391797), (63, 329607), (81, 256361), (159, 130599), (189, 109869), (371, 55971), (477, 43533), (567, 36623), (691, 30051), (1113, 18657), (1431, 14511), (2073, 10017), (3339, 6219), (4293, 4837)]