18385521

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:170

約数の個数: 64

約数和(自身を含む): 33177600

約数和(自身を除く): 14792079

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 59, 71, 77, 133, 177, 209, 213, 231, 399, 413, 497, 627, 649, 781, 1121, 1239, 1349, 1463, 1491, 1947, 2343, 3363, 4047, 4189, 4389, 4543, 5467, 7847, 9443, 12331, 12567, 13629, 14839, 16401, 23541, 28329, 29323, 36993, 44517, 46079, 79591, 86317, 87969, 103873, 138237, 238773, 258951, 311619, 322553, 557137, 875501, 967659, 1671411, 2626503, 6128507, 18385521]

約数ペア:

[(1, 18385521), (3, 6128507), (7, 2626503), (11, 1671411), (19, 967659), (21, 875501), (33, 557137), (57, 322553), (59, 311619), (71, 258951), (77, 238773), (133, 138237), (177, 103873), (209, 87969), (213, 86317), (231, 79591), (399, 46079), (413, 44517), (497, 36993), (627, 29323), (649, 28329), (781, 23541), (1121, 16401), (1239, 14839), (1349, 13629), (1463, 12567), (1491, 12331), (1947, 9443), (2343, 7847), (3363, 5467), (4047, 4543), (4189, 4389)]