19769211

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 37647360

約数和(自身を除く): 17878149

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 63, 77, 99, 111, 189, 231, 257, 259, 297, 333, 407, 693, 771, 777, 999, 1221, 1799, 2079, 2313, 2331, 2827, 2849, 3663, 5397, 6939, 6993, 8481, 8547, 9509, 10989, 16191, 19789, 25443, 25641, 28527, 48573, 59367, 66563, 76329, 76923, 85581, 104599, 178101, 199689, 256743, 313797, 534303, 599067, 732193, 941391, 1797201, 2196579, 2824173, 6589737, 19769211]

約数ペア:

[(1, 19769211), (3, 6589737), (7, 2824173), (9, 2196579), (11, 1797201), (21, 941391), (27, 732193), (33, 599067), (37, 534303), (63, 313797), (77, 256743), (99, 199689), (111, 178101), (189, 104599), (231, 85581), (257, 76923), (259, 76329), (297, 66563), (333, 59367), (407, 48573), (693, 28527), (771, 25641), (777, 25443), (999, 19789), (1221, 16191), (1799, 10989), (2079, 9509), (2313, 8547), (2331, 8481), (2827, 6993), (2849, 6939), (3663, 5397)]