21086811

素因数分解:

$3^5\times {\mathrm{107}}^1\times {\mathrm{811}}^1$

素因数の和:933

約数の個数: 24

約数和(自身を含む): 31921344

約数和(自身を除く): 10834533

約数列:

[1, 3, 9, 27, 81, 107, 243, 321, 811, 963, 2433, 2889, 7299, 8667, 21897, 26001, 65691, 86777, 197073, 260331, 780993, 2342979, 7028937, 21086811]

約数ペア:

[(1, 21086811), (3, 7028937), (9, 2342979), (27, 780993), (81, 260331), (107, 197073), (243, 86777), (321, 65691), (811, 26001), (963, 21897), (2433, 8667), (2889, 7299)]