27990249

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:158

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 20393751

約数列:

[1, 3, 7, 19, 21, 29, 41, 57, 59, 87, 123, 133, 177, 203, 287, 399, 413, 551, 609, 779, 861, 1121, 1189, 1239, 1653, 1711, 2337, 2419, 3363, 3567, 3857, 5133, 5453, 7257, 7847, 8323, 11571, 11977, 16359, 16933, 22591, 23541, 24969, 32509, 35931, 45961, 50799, 67773, 70151, 97527, 137883, 158137, 210453, 227563, 321727, 474411, 491057, 682689, 965181, 1332869, 1473171, 3998607, 9330083, 27990249]

約数ペア:

[(1, 27990249), (3, 9330083), (7, 3998607), (19, 1473171), (21, 1332869), (29, 965181), (41, 682689), (57, 491057), (59, 474411), (87, 321727), (123, 227563), (133, 210453), (177, 158137), (203, 137883), (287, 97527), (399, 70151), (413, 67773), (551, 50799), (609, 45961), (779, 35931), (861, 32509), (1121, 24969), (1189, 23541), (1239, 22591), (1653, 16933), (1711, 16359), (2337, 11977), (2419, 11571), (3363, 8323), (3567, 7847), (3857, 7257), (5133, 5453)]