21379600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:185

約数の個数: 120

約数和(自身を含む): 57844512

約数和(自身を除く): 36464912

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 43, 44, 50, 55, 80, 86, 88, 100, 110, 113, 172, 176, 200, 215, 220, 226, 275, 344, 400, 430, 440, 452, 473, 550, 565, 688, 860, 880, 904, 946, 1075, 1100, 1130, 1243, 1720, 1808, 1892, 2150, 2200, 2260, 2365, 2486, 2825, 3440, 3784, 4300, 4400, 4520, 4730, 4859, 4972, 5650, 6215, 7568, 8600, 9040, 9460, 9718, 9944, 11300, 11825, 12430, 17200, 18920, 19436, 19888, 22600, 23650, 24295, 24860, 31075, 37840, 38872, 45200, 47300, 48590, 49720, 53449, 62150, 77744, 94600, 97180, 99440, 106898, 121475, 124300, 189200, 194360, 213796, 242950, 248600, 267245, 388720, 427592, 485900, 497200, 534490, 855184, 971800, 1068980, 1336225, 1943600, 2137960, 2672450, 4275920, 5344900, 10689800, 21379600]

約数ペア:

[(1, 21379600), (2, 10689800), (4, 5344900), (5, 4275920), (8, 2672450), (10, 2137960), (11, 1943600), (16, 1336225), (20, 1068980), (22, 971800), (25, 855184), (40, 534490), (43, 497200), (44, 485900), (50, 427592), (55, 388720), (80, 267245), (86, 248600), (88, 242950), (100, 213796), (110, 194360), (113, 189200), (172, 124300), (176, 121475), (200, 106898), (215, 99440), (220, 97180), (226, 94600), (275, 77744), (344, 62150), (400, 53449), (430, 49720), (440, 48590), (452, 47300), (473, 45200), (550, 38872), (565, 37840), (688, 31075), (860, 24860), (880, 24295), (904, 23650), (946, 22600), (1075, 19888), (1100, 19436), (1130, 18920), (1243, 17200), (1720, 12430), (1808, 11825), (1892, 11300), (2150, 9944), (2200, 9718), (2260, 9460), (2365, 9040), (2486, 8600), (2825, 7568), (3440, 6215), (3784, 5650), (4300, 4972), (4400, 4859), (4520, 4730)]