388980963

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{769}}^1$

素因数の和:857

約数の個数: 72

約数和(自身を含む): 693813120

約数和(自身を除く): 304832157

約数列:

[1, 3, 7, 9, 21, 31, 37, 49, 63, 93, 111, 147, 217, 259, 279, 333, 441, 651, 769, 777, 1147, 1519, 1813, 1953, 2307, 2331, 3441, 4557, 5383, 5439, 6921, 8029, 10323, 13671, 16149, 16317, 23839, 24087, 28453, 37681, 48447, 56203, 71517, 72261, 85359, 113043, 166873, 168609, 199171, 214551, 256077, 339129, 500619, 505827, 597513, 882043, 1168111, 1394197, 1501857, 1792539, 2646129, 3504333, 4182591, 6174301, 7938387, 10512999, 12547773, 18522903, 43220107, 55568709, 129660321, 388980963]

約数ペア:

[(1, 388980963), (3, 129660321), (7, 55568709), (9, 43220107), (21, 18522903), (31, 12547773), (37, 10512999), (49, 7938387), (63, 6174301), (93, 4182591), (111, 3504333), (147, 2646129), (217, 1792539), (259, 1501857), (279, 1394197), (333, 1168111), (441, 882043), (651, 597513), (769, 505827), (777, 500619), (1147, 339129), (1519, 256077), (1813, 214551), (1953, 199171), (2307, 168609), (2331, 166873), (3441, 113043), (4557, 85359), (5383, 72261), (5439, 71517), (6921, 56203), (8029, 48447), (10323, 37681), (13671, 28453), (16149, 24087), (16317, 23839)]