21329055

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:349

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 20972385

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 53, 55, 99, 135, 159, 165, 265, 271, 297, 477, 495, 583, 795, 813, 1355, 1431, 1485, 1749, 2385, 2439, 2915, 2981, 4065, 5247, 7155, 7317, 8745, 8943, 12195, 14363, 14905, 15741, 26235, 26829, 36585, 43089, 44715, 71815, 78705, 80487, 129267, 134145, 157993, 215445, 387801, 402435, 473979, 646335, 789965, 1421937, 1939005, 2369895, 4265811, 7109685, 21329055]

約数ペア:

[(1, 21329055), (3, 7109685), (5, 4265811), (9, 2369895), (11, 1939005), (15, 1421937), (27, 789965), (33, 646335), (45, 473979), (53, 402435), (55, 387801), (99, 215445), (135, 157993), (159, 134145), (165, 129267), (265, 80487), (271, 78705), (297, 71815), (477, 44715), (495, 43089), (583, 36585), (795, 26829), (813, 26235), (1355, 15741), (1431, 14905), (1485, 14363), (1749, 12195), (2385, 8943), (2439, 8745), (2915, 7317), (2981, 7155), (4065, 5247)]