21691737

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2437}}^1$

素因数の和:2509

約数の個数: 24

約数和(自身を含む): 33468864

約数和(自身を除く): 11777127

約数列:

[1, 3, 9, 23, 43, 69, 129, 207, 387, 989, 2437, 2967, 7311, 8901, 21933, 56051, 104791, 168153, 314373, 504459, 943119, 2410193, 7230579, 21691737]

約数ペア:

[(1, 21691737), (3, 7230579), (9, 2410193), (23, 943119), (43, 504459), (69, 314373), (129, 168153), (207, 104791), (387, 56051), (989, 21933), (2437, 8901), (2967, 7311)]