21131943

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14173}}^1$

素因数の和:14254

約数の個数: 16

約数和(自身を含む): 32656896

約数和(自身を除く): 11524953

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14173, 42519, 99211, 297633, 1006283, 3018849, 7043981, 21131943]

約数ペア:

[(1, 21131943), (3, 7043981), (7, 3018849), (21, 1006283), (71, 297633), (213, 99211), (497, 42519), (1491, 14173)]