21039972

素因数分解:

$2^2\times 3^1\times {\mathrm{1087}}^1\times {\mathrm{1613}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 49168896

約数和(自身を除く): 28128924

約数列:

[1, 2, 3, 4, 6, 12, 1087, 1613, 2174, 3226, 3261, 4348, 4839, 6452, 6522, 9678, 13044, 19356, 1753331, 3506662, 5259993, 7013324, 10519986, 21039972]

約数ペア:

[(1, 21039972), (2, 10519986), (3, 7013324), (4, 5259993), (6, 3506662), (12, 1753331), (1087, 19356), (1613, 13044), (2174, 9678), (3226, 6522), (3261, 6452), (4348, 4839)]