21338565

素因数分解:

$3^1\times 5^1\times {\mathrm{151}}^1\times {\mathrm{9421}}^1$

素因数の和:9580

約数の個数: 16

約数和(自身を含む): 34371456

約数和(自身を除く): 13032891

約数列:

[1, 3, 5, 15, 151, 453, 755, 2265, 9421, 28263, 47105, 141315, 1422571, 4267713, 7112855, 21338565]

約数ペア:

[(1, 21338565), (3, 7112855), (5, 4267713), (15, 1422571), (151, 141315), (453, 47105), (755, 28263), (2265, 9421)]