21284805

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{38351}}^1$

素因数の和:38396

約数の個数: 16

約数和(自身を含む): 34977024

約数和(自身を除く): 13692219

約数列:

[1, 3, 5, 15, 37, 111, 185, 555, 38351, 115053, 191755, 575265, 1418987, 4256961, 7094935, 21284805]

約数ペア:

[(1, 21284805), (3, 7094935), (5, 4256961), (15, 1418987), (37, 575265), (111, 191755), (185, 115053), (555, 38351)]