18986247

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{13103}}^1$

素因数の和:13139

約数の個数: 24

約数和(自身を含む): 32707584

約数和(自身を除く): 13721337

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 13103, 39309, 91721, 117927, 275163, 301369, 825489, 904107, 2109583, 2712321, 6328749, 18986247]

約数ペア:

[(1, 18986247), (3, 6328749), (7, 2712321), (9, 2109583), (21, 904107), (23, 825489), (63, 301369), (69, 275163), (161, 117927), (207, 91721), (483, 39309), (1449, 13103)]