7571421

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:123

約数の個数: 64

約数和(自身を含む): 13789440

約数和(自身を除く): 6218019

約数列:

[1, 3, 9, 11, 13, 27, 33, 37, 39, 53, 99, 111, 117, 143, 159, 297, 333, 351, 407, 429, 477, 481, 583, 689, 999, 1221, 1287, 1431, 1443, 1749, 1961, 2067, 3663, 3861, 4329, 5247, 5291, 5883, 6201, 7579, 10989, 12987, 15741, 15873, 17649, 18603, 21571, 22737, 25493, 47619, 52947, 64713, 68211, 76479, 142857, 194139, 204633, 229437, 280423, 582417, 688311, 841269, 2523807, 7571421]

約数ペア:

[(1, 7571421), (3, 2523807), (9, 841269), (11, 688311), (13, 582417), (27, 280423), (33, 229437), (37, 204633), (39, 194139), (53, 142857), (99, 76479), (111, 68211), (117, 64713), (143, 52947), (159, 47619), (297, 25493), (333, 22737), (351, 21571), (407, 18603), (429, 17649), (477, 15873), (481, 15741), (583, 12987), (689, 10989), (999, 7579), (1221, 6201), (1287, 5883), (1431, 5291), (1443, 5247), (1749, 4329), (1961, 3861), (2067, 3663)]