18787870

素因数分解:

$2^1\times 5^1\times {\mathrm{433}}^1\times {\mathrm{4339}}^1$

素因数の和:4779

約数の個数: 16

約数和(自身を含む): 33904080

約数和(自身を除く): 15116210

約数列:

[1, 2, 5, 10, 433, 866, 2165, 4330, 4339, 8678, 21695, 43390, 1878787, 3757574, 9393935, 18787870]

約数ペア:

[(1, 18787870), (2, 9393935), (5, 3757574), (10, 1878787), (433, 43390), (866, 21695), (2165, 8678), (4330, 4339)]