21055990400

素因数分解:

$2^7\times 5^2\times {\mathrm{127}}^1\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:611

約数の個数: 192

約数和(自身を含む): 52890900480

約数和(自身を除く): 31834910080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 127, 128, 160, 197, 200, 254, 263, 320, 394, 400, 508, 526, 635, 640, 788, 800, 985, 1016, 1052, 1270, 1315, 1576, 1600, 1970, 2032, 2104, 2540, 2630, 3152, 3175, 3200, 3940, 4064, 4208, 4925, 5080, 5260, 6304, 6350, 6575, 7880, 8128, 8416, 9850, 10160, 10520, 12608, 12700, 13150, 15760, 16256, 16832, 19700, 20320, 21040, 25019, 25216, 25400, 26300, 31520, 33401, 33664, 39400, 40640, 42080, 50038, 50800, 51811, 52600, 63040, 66802, 78800, 81280, 84160, 100076, 101600, 103622, 105200, 125095, 126080, 133604, 157600, 167005, 168320, 200152, 203200, 207244, 210400, 250190, 259055, 267208, 315200, 334010, 400304, 406400, 414488, 420800, 500380, 518110, 534416, 625475, 630400, 668020, 800608, 828976, 835025, 841600, 1000760, 1036220, 1068832, 1250950, 1295275, 1336040, 1601216, 1657952, 1670050, 2001520, 2072440, 2137664, 2501900, 2590550, 2672080, 3202432, 3315904, 3340100, 4003040, 4144880, 4275328, 5003800, 5181100, 5344160, 6579997, 6631808, 6680200, 8006080, 8289760, 10007600, 10362200, 10688320, 13159994, 13360400, 16012160, 16579520, 20015200, 20724400, 21376640, 26319988, 26720800, 32899985, 33159040, 40030400, 41448800, 52639976, 53441600, 65799970, 80060800, 82897600, 105279952, 106883200, 131599940, 164499925, 165795200, 210559904, 263199880, 328999850, 421119808, 526399760, 657999700, 842239616, 1052799520, 1315999400, 2105599040, 2631998800, 4211198080, 5263997600, 10527995200, 21055990400]

約数ペア:

[(1, 21055990400), (2, 10527995200), (4, 5263997600), (5, 4211198080), (8, 2631998800), (10, 2105599040), (16, 1315999400), (20, 1052799520), (25, 842239616), (32, 657999700), (40, 526399760), (50, 421119808), (64, 328999850), (80, 263199880), (100, 210559904), (127, 165795200), (128, 164499925), (160, 131599940), (197, 106883200), (200, 105279952), (254, 82897600), (263, 80060800), (320, 65799970), (394, 53441600), (400, 52639976), (508, 41448800), (526, 40030400), (635, 33159040), (640, 32899985), (788, 26720800), (800, 26319988), (985, 21376640), (1016, 20724400), (1052, 20015200), (1270, 16579520), (1315, 16012160), (1576, 13360400), (1600, 13159994), (1970, 10688320), (2032, 10362200), (2104, 10007600), (2540, 8289760), (2630, 8006080), (3152, 6680200), (3175, 6631808), (3200, 6579997), (3940, 5344160), (4064, 5181100), (4208, 5003800), (4925, 4275328), (5080, 4144880), (5260, 4003040), (6304, 3340100), (6350, 3315904), (6575, 3202432), (7880, 2672080), (8128, 2590550), (8416, 2501900), (9850, 2137664), (10160, 2072440), (10520, 2001520), (12608, 1670050), (12700, 1657952), (13150, 1601216), (15760, 1336040), (16256, 1295275), (16832, 1250950), (19700, 1068832), (20320, 1036220), (21040, 1000760), (25019, 841600), (25216, 835025), (25400, 828976), (26300, 800608), (31520, 668020), (33401, 630400), (33664, 625475), (39400, 534416), (40640, 518110), (42080, 500380), (50038, 420800), (50800, 414488), (51811, 406400), (52600, 400304), (63040, 334010), (66802, 315200), (78800, 267208), (81280, 259055), (84160, 250190), (100076, 210400), (101600, 207244), (103622, 203200), (105200, 200152), (125095, 168320), (126080, 167005), (133604, 157600)]