19859765

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1301}}^1$

素因数の和:1420

約数の個数: 16

約数和(自身を含む): 24748416

約数和(自身を除く): 4888651

約数列:

[1, 5, 43, 71, 215, 355, 1301, 3053, 6505, 15265, 55943, 92371, 279715, 461855, 3971953, 19859765]

約数ペア:

[(1, 19859765), (5, 3971953), (43, 461855), (71, 279715), (215, 92371), (355, 55943), (1301, 15265), (3053, 6505)]