21490893

素因数分解:

$3^3\times {\mathrm{313}}^1\times {\mathrm{2543}}^1$

素因数の和:2865

約数の個数: 16

約数和(自身を含む): 31952640

約数和(自身を除く): 10461747

約数列:

[1, 3, 9, 27, 313, 939, 2543, 2817, 7629, 8451, 22887, 68661, 795959, 2387877, 7163631, 21490893]

約数ペア:

[(1, 21490893), (3, 7163631), (9, 2387877), (27, 795959), (313, 68661), (939, 22887), (2543, 8451), (2817, 7629)]