21287200

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 59058720

約数和(自身を除く): 37771520

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 41, 44, 50, 55, 59, 80, 82, 88, 100, 110, 118, 160, 164, 176, 200, 205, 220, 236, 275, 295, 328, 352, 400, 410, 440, 451, 472, 550, 590, 649, 656, 800, 820, 880, 902, 944, 1025, 1100, 1180, 1298, 1312, 1475, 1640, 1760, 1804, 1888, 2050, 2200, 2255, 2360, 2419, 2596, 2950, 3245, 3280, 3608, 4100, 4400, 4510, 4720, 4838, 5192, 5900, 6490, 6560, 7216, 8200, 8800, 9020, 9440, 9676, 10384, 11275, 11800, 12095, 12980, 14432, 16225, 16400, 18040, 19352, 20768, 22550, 23600, 24190, 25960, 26609, 32450, 32800, 36080, 38704, 45100, 47200, 48380, 51920, 53218, 60475, 64900, 72160, 77408, 90200, 96760, 103840, 106436, 120950, 129800, 133045, 180400, 193520, 212872, 241900, 259600, 266090, 360800, 387040, 425744, 483800, 519200, 532180, 665225, 851488, 967600, 1064360, 1330450, 1935200, 2128720, 2660900, 4257440, 5321800, 10643600, 21287200]

約数ペア:

[(1, 21287200), (2, 10643600), (4, 5321800), (5, 4257440), (8, 2660900), (10, 2128720), (11, 1935200), (16, 1330450), (20, 1064360), (22, 967600), (25, 851488), (32, 665225), (40, 532180), (41, 519200), (44, 483800), (50, 425744), (55, 387040), (59, 360800), (80, 266090), (82, 259600), (88, 241900), (100, 212872), (110, 193520), (118, 180400), (160, 133045), (164, 129800), (176, 120950), (200, 106436), (205, 103840), (220, 96760), (236, 90200), (275, 77408), (295, 72160), (328, 64900), (352, 60475), (400, 53218), (410, 51920), (440, 48380), (451, 47200), (472, 45100), (550, 38704), (590, 36080), (649, 32800), (656, 32450), (800, 26609), (820, 25960), (880, 24190), (902, 23600), (944, 22550), (1025, 20768), (1100, 19352), (1180, 18040), (1298, 16400), (1312, 16225), (1475, 14432), (1640, 12980), (1760, 12095), (1804, 11800), (1888, 11275), (2050, 10384), (2200, 9676), (2255, 9440), (2360, 9020), (2419, 8800), (2596, 8200), (2950, 7216), (3245, 6560), (3280, 6490), (3608, 5900), (4100, 5192), (4400, 4838), (4510, 4720)]