21625131

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 11206869

約数列:

[1, 3, 11, 33, 37, 89, 111, 199, 267, 407, 597, 979, 1221, 2189, 2937, 3293, 6567, 7363, 9879, 17711, 22089, 36223, 53133, 80993, 108669, 194821, 242979, 584463, 655307, 1965921, 7208377, 21625131]

約数ペア:

[(1, 21625131), (3, 7208377), (11, 1965921), (33, 655307), (37, 584463), (89, 242979), (111, 194821), (199, 108669), (267, 80993), (407, 53133), (597, 36223), (979, 22089), (1221, 17711), (2189, 9879), (2937, 7363), (3293, 6567)]