643556864

素因数分解:

$2^9\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:623

約数の個数: 80

約数和(自身を含む): 1347904800

約数和(自身を除く): 704347936

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 64, 89, 116, 128, 178, 232, 256, 356, 464, 487, 512, 712, 928, 974, 1424, 1856, 1948, 2581, 2848, 3712, 3896, 5162, 5696, 7424, 7792, 10324, 11392, 14123, 14848, 15584, 20648, 22784, 28246, 31168, 41296, 43343, 45568, 56492, 62336, 82592, 86686, 112984, 124672, 165184, 173372, 225968, 249344, 330368, 346744, 451936, 660736, 693488, 903872, 1256947, 1321472, 1386976, 1807744, 2513894, 2773952, 3615488, 5027788, 5547904, 7230976, 10055576, 11095808, 20111152, 22191616, 40222304, 80444608, 160889216, 321778432, 643556864]

約数ペア:

[(1, 643556864), (2, 321778432), (4, 160889216), (8, 80444608), (16, 40222304), (29, 22191616), (32, 20111152), (58, 11095808), (64, 10055576), (89, 7230976), (116, 5547904), (128, 5027788), (178, 3615488), (232, 2773952), (256, 2513894), (356, 1807744), (464, 1386976), (487, 1321472), (512, 1256947), (712, 903872), (928, 693488), (974, 660736), (1424, 451936), (1856, 346744), (1948, 330368), (2581, 249344), (2848, 225968), (3712, 173372), (3896, 165184), (5162, 124672), (5696, 112984), (7424, 86686), (7792, 82592), (10324, 62336), (11392, 56492), (14123, 45568), (14848, 43343), (15584, 41296), (20648, 31168), (22784, 28246)]