18788847

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 12699153

約数列:

[1, 3, 7, 11, 21, 33, 77, 163, 231, 489, 499, 1141, 1497, 1793, 3423, 3493, 5379, 5489, 10479, 12551, 16467, 37653, 38423, 81337, 115269, 244011, 569359, 894707, 1708077, 2684121, 6262949, 18788847]

約数ペア:

[(1, 18788847), (3, 6262949), (7, 2684121), (11, 1708077), (21, 894707), (33, 569359), (77, 244011), (163, 115269), (231, 81337), (489, 38423), (499, 37653), (1141, 16467), (1497, 12551), (1793, 10479), (3423, 5489), (3493, 5379)]