21381153

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2713}}^1$

素因数の和:2824

約数の個数: 16

約数和(自身を含む): 29702016

約数和(自身を除く): 8320863

約数列:

[1, 3, 37, 71, 111, 213, 2627, 2713, 7881, 8139, 100381, 192623, 301143, 577869, 7127051, 21381153]

約数ペア:

[(1, 21381153), (3, 7127051), (37, 577869), (71, 301143), (111, 192623), (213, 100381), (2627, 8139), (2713, 7881)]