21203937

素因数分解:

$3^5\times {\mathrm{71}}^1\times {\mathrm{1229}}^1$

素因数の和:1315

約数の個数: 24

約数和(自身を含む): 32235840

約数和(自身を除く): 11031903

約数列:

[1, 3, 9, 27, 71, 81, 213, 243, 639, 1229, 1917, 3687, 5751, 11061, 17253, 33183, 87259, 99549, 261777, 298647, 785331, 2355993, 7067979, 21203937]

約数ペア:

[(1, 21203937), (3, 7067979), (9, 2355993), (27, 785331), (71, 298647), (81, 261777), (213, 99549), (243, 87259), (639, 33183), (1229, 17253), (1917, 11061), (3687, 5751)]