19982785

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{911}}^1$

素因数の和:1064

約数の個数: 16

約数和(自身を含む): 24820992

約数和(自身を除く): 4838207

約数列:

[1, 5, 41, 107, 205, 535, 911, 4387, 4555, 21935, 37351, 97477, 186755, 487385, 3996557, 19982785]

約数ペア:

[(1, 19982785), (5, 3996557), (41, 487385), (107, 186755), (205, 97477), (535, 37351), (911, 21935), (4387, 4555)]