18564777

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 35212320

約数和(自身を除く): 16647543

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 49, 63, 77, 89, 99, 129, 147, 231, 267, 301, 387, 441, 473, 539, 623, 693, 801, 903, 979, 1419, 1617, 1869, 2107, 2709, 2937, 3311, 3827, 4257, 4361, 4851, 5607, 6321, 6853, 8811, 9933, 11481, 13083, 18963, 20559, 23177, 26789, 29799, 34443, 39249, 42097, 47971, 61677, 69531, 80367, 126291, 143913, 187523, 208593, 241101, 294679, 378873, 431739, 562569, 884037, 1687707, 2062753, 2652111, 6188259, 18564777]

約数ペア:

[(1, 18564777), (3, 6188259), (7, 2652111), (9, 2062753), (11, 1687707), (21, 884037), (33, 562569), (43, 431739), (49, 378873), (63, 294679), (77, 241101), (89, 208593), (99, 187523), (129, 143913), (147, 126291), (231, 80367), (267, 69531), (301, 61677), (387, 47971), (441, 42097), (473, 39249), (539, 34443), (623, 29799), (693, 26789), (801, 23177), (903, 20559), (979, 18963), (1419, 13083), (1617, 11481), (1869, 9933), (2107, 8811), (2709, 6853), (2937, 6321), (3311, 5607), (3827, 4851), (4257, 4361)]