28288743

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{18973}}^1$

素因数の和:19054

約数の個数: 16

約数和(自身を含む): 43716096

約数和(自身を除く): 15427353

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 18973, 56919, 132811, 398433, 1347083, 4041249, 9429581, 28288743]

約数ペア:

[(1, 28288743), (3, 9429581), (7, 4041249), (21, 1347083), (71, 398433), (213, 132811), (497, 56919), (1491, 18973)]