18305847

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1303}}^1$

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 30377984

約数和(自身を除く): 12072137

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1303, 1561, 2007, 3909, 4683, 9121, 11727, 14049, 27363, 82089, 290569, 871707, 2033983, 2615121, 6101949, 18305847]

約数ペア:

[(1, 18305847), (3, 6101949), (7, 2615121), (9, 2033983), (21, 871707), (63, 290569), (223, 82089), (669, 27363), (1303, 14049), (1561, 11727), (2007, 9121), (3909, 4683)]