21066339

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^2\times {\mathrm{199}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 32723200

約数和(自身を除く): 11656861

約数列:

[1, 3, 7, 21, 71, 199, 213, 497, 597, 1393, 1491, 4179, 5041, 14129, 15123, 35287, 42387, 98903, 105861, 296709, 1003159, 3009477, 7022113, 21066339]

約数ペア:

[(1, 21066339), (3, 7022113), (7, 3009477), (21, 1003159), (71, 296709), (199, 105861), (213, 98903), (497, 42387), (597, 35287), (1393, 15123), (1491, 14129), (4179, 5041)]