18847017

素因数分解:

$3^2\times 7^2\times {\mathrm{42737}}^1$

素因数の和:42757

約数の個数: 18

約数和(自身を含む): 31668858

約数和(自身を除く): 12821841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42737, 128211, 299159, 384633, 897477, 2094113, 2692431, 6282339, 18847017]

約数ペア:

[(1, 18847017), (3, 6282339), (7, 2692431), (9, 2094113), (21, 897477), (49, 384633), (63, 299159), (147, 128211), (441, 42737)]