21257264

素因数分解:

$2^4\times 7^1\times {\mathrm{189797}}^1$

素因数の和:189812

約数の個数: 20

約数和(自身を含む): 47069904

約数和(自身を除く): 25812640

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189797, 379594, 759188, 1328579, 1518376, 2657158, 3036752, 5314316, 10628632, 21257264]

約数ペア:

[(1, 21257264), (2, 10628632), (4, 5314316), (7, 3036752), (8, 2657158), (14, 1518376), (16, 1328579), (28, 759188), (56, 379594), (112, 189797)]