20899347

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 32845824

約数和(自身を除く): 11946477

約数列:

[1, 3, 7, 21, 71, 107, 131, 213, 321, 393, 497, 749, 917, 1491, 2247, 2751, 7597, 9301, 14017, 22791, 27903, 42051, 53179, 65107, 98119, 159537, 195321, 294357, 995207, 2985621, 6966449, 20899347]

約数ペア:

[(1, 20899347), (3, 6966449), (7, 2985621), (21, 995207), (71, 294357), (107, 195321), (131, 159537), (213, 98119), (321, 65107), (393, 53179), (497, 42051), (749, 27903), (917, 22791), (1491, 14017), (2247, 9301), (2751, 7597)]