19987264

素因数分解:

$2^6\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:152

約数の個数: 84

約数和(自身を含む): 45605700

約数和(自身を除く): 25618436

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 32, 44, 58, 64, 88, 89, 116, 121, 176, 178, 232, 242, 319, 352, 356, 464, 484, 638, 704, 712, 928, 968, 979, 1276, 1424, 1856, 1936, 1958, 2552, 2581, 2848, 3509, 3872, 3916, 5104, 5162, 5696, 7018, 7744, 7832, 10208, 10324, 10769, 14036, 15664, 20416, 20648, 21538, 28072, 28391, 31328, 41296, 43076, 56144, 56782, 62656, 82592, 86152, 112288, 113564, 165184, 172304, 224576, 227128, 312301, 344608, 454256, 624602, 689216, 908512, 1249204, 1817024, 2498408, 4996816, 9993632, 19987264]

約数ペア:

[(1, 19987264), (2, 9993632), (4, 4996816), (8, 2498408), (11, 1817024), (16, 1249204), (22, 908512), (29, 689216), (32, 624602), (44, 454256), (58, 344608), (64, 312301), (88, 227128), (89, 224576), (116, 172304), (121, 165184), (176, 113564), (178, 112288), (232, 86152), (242, 82592), (319, 62656), (352, 56782), (356, 56144), (464, 43076), (484, 41296), (638, 31328), (704, 28391), (712, 28072), (928, 21538), (968, 20648), (979, 20416), (1276, 15664), (1424, 14036), (1856, 10769), (1936, 10324), (1958, 10208), (2552, 7832), (2581, 7744), (2848, 7018), (3509, 5696), (3872, 5162), (3916, 5104)]