18420678

素因数分解:

$2^1\times 3^2\times {\mathrm{691}}^1\times {\mathrm{1481}}^1$

素因数の和:2180

約数の個数: 24

約数和(自身を含む): 39996216

約数和(自身を除く): 21575538

約数列:

[1, 2, 3, 6, 9, 18, 691, 1382, 1481, 2073, 2962, 4146, 4443, 6219, 8886, 12438, 13329, 26658, 1023371, 2046742, 3070113, 6140226, 9210339, 18420678]

約数ペア:

[(1, 18420678), (2, 9210339), (3, 6140226), (6, 3070113), (9, 2046742), (18, 1023371), (691, 26658), (1382, 13329), (1481, 12438), (2073, 8886), (2962, 6219), (4146, 4443)]