19918899

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 40517120

約数和(自身を除く): 20598221

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 63, 67, 77, 91, 99, 117, 121, 143, 189, 201, 231, 273, 297, 351, 363, 429, 469, 603, 693, 737, 819, 847, 871, 1001, 1089, 1287, 1407, 1573, 1809, 2079, 2211, 2457, 2541, 2613, 3003, 3267, 3861, 4221, 4719, 5159, 6097, 6633, 7623, 7839, 8107, 9009, 9581, 11011, 12663, 14157, 15477, 18291, 19899, 22869, 23517, 24321, 27027, 28743, 33033, 42471, 46431, 54873, 56749, 67067, 72963, 86229, 99099, 105391, 139293, 164619, 170247, 201201, 218889, 258687, 297297, 316173, 510741, 603603, 737737, 948519, 1532223, 1810809, 2213211, 2845557, 6639633, 19918899]

約数ペア:

[(1, 19918899), (3, 6639633), (7, 2845557), (9, 2213211), (11, 1810809), (13, 1532223), (21, 948519), (27, 737737), (33, 603603), (39, 510741), (63, 316173), (67, 297297), (77, 258687), (91, 218889), (99, 201201), (117, 170247), (121, 164619), (143, 139293), (189, 105391), (201, 99099), (231, 86229), (273, 72963), (297, 67067), (351, 56749), (363, 54873), (429, 46431), (469, 42471), (603, 33033), (693, 28743), (737, 27027), (819, 24321), (847, 23517), (871, 22869), (1001, 19899), (1089, 18291), (1287, 15477), (1407, 14157), (1573, 12663), (1809, 11011), (2079, 9581), (2211, 9009), (2457, 8107), (2541, 7839), (2613, 7623), (3003, 6633), (3267, 6097), (3861, 5159), (4221, 4719)]