21002247

素因数分解:

$3^5\times 7^1\times {\mathrm{12347}}^1$

素因数の和:12369

約数の個数: 24

約数和(自身を含む): 35957376

約数和(自身を除く): 14955129

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12347, 37041, 86429, 111123, 259287, 333369, 777861, 1000107, 2333583, 3000321, 7000749, 21002247]

約数ペア:

[(1, 21002247), (3, 7000749), (7, 3000321), (9, 2333583), (21, 1000107), (27, 777861), (63, 333369), (81, 259287), (189, 111123), (243, 86429), (567, 37041), (1701, 12347)]