21216799

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 23392800

約数和(自身を除く): 2176001

約数列:

[1, 17, 37, 89, 379, 629, 1513, 3293, 6443, 14023, 33731, 55981, 238391, 573427, 1248047, 21216799]

約数ペア:

[(1, 21216799), (17, 1248047), (37, 573427), (89, 238391), (379, 55981), (629, 33731), (1513, 14023), (3293, 6443)]