20886471

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{151}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 32102400

約数和(自身を除く): 11215929

約数列:

[1, 3, 9, 27, 47, 109, 141, 151, 327, 423, 453, 981, 1269, 1359, 2943, 4077, 5123, 7097, 15369, 16459, 21291, 46107, 49377, 63873, 138321, 148131, 191619, 444393, 773573, 2320719, 6962157, 20886471]

約数ペア:

[(1, 20886471), (3, 6962157), (9, 2320719), (27, 773573), (47, 444393), (109, 191619), (141, 148131), (151, 138321), (327, 63873), (423, 49377), (453, 46107), (981, 21291), (1269, 16459), (1359, 15369), (2943, 7097), (4077, 5123)]