21000913281

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{1559}}^1\times {\mathrm{7027}}^1$

素因数の和:8666

約数の個数: 32

約数和(自身を含む): 31575398400

約数和(自身を除く): 10574485119

約数列:

[1, 3, 9, 27, 71, 213, 639, 1559, 1917, 4677, 7027, 14031, 21081, 42093, 63243, 110689, 189729, 332067, 498917, 996201, 1496751, 2988603, 4490253, 10955093, 13470759, 32865279, 98595837, 295787511, 777811603, 2333434809, 7000304427, 21000913281]

約数ペア:

[(1, 21000913281), (3, 7000304427), (9, 2333434809), (27, 777811603), (71, 295787511), (213, 98595837), (639, 32865279), (1559, 13470759), (1917, 10955093), (4677, 4490253), (7027, 2988603), (14031, 1496751), (21081, 996201), (42093, 498917), (63243, 332067), (110689, 189729)]