18927363

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 33868800

約数和(自身を除く): 14941437

約数列:

[1, 3, 7, 13, 19, 21, 39, 41, 57, 89, 91, 123, 133, 247, 267, 273, 287, 399, 533, 623, 741, 779, 861, 1157, 1599, 1691, 1729, 1869, 2337, 3471, 3649, 3731, 5073, 5187, 5453, 8099, 10127, 10947, 11193, 11837, 16359, 21983, 24297, 25543, 30381, 35511, 47437, 65949, 69331, 70889, 76629, 142311, 153881, 207993, 212667, 332059, 461643, 485317, 901303, 996177, 1455951, 2703909, 6309121, 18927363]

約数ペア:

[(1, 18927363), (3, 6309121), (7, 2703909), (13, 1455951), (19, 996177), (21, 901303), (39, 485317), (41, 461643), (57, 332059), (89, 212667), (91, 207993), (123, 153881), (133, 142311), (247, 76629), (267, 70889), (273, 69331), (287, 65949), (399, 47437), (533, 35511), (623, 30381), (741, 25543), (779, 24297), (861, 21983), (1157, 16359), (1599, 11837), (1691, 11193), (1729, 10947), (1869, 10127), (2337, 8099), (3471, 5453), (3649, 5187), (3731, 5073)]