12720400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1$

素因数の和:102

約数の個数: 180

約数和(自身を含む): 39439440

約数和(自身を除く): 26719040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 49, 50, 55, 56, 59, 70, 77, 80, 88, 98, 100, 110, 112, 118, 140, 154, 175, 176, 196, 200, 220, 236, 245, 275, 280, 295, 308, 350, 385, 392, 400, 413, 440, 472, 490, 539, 550, 560, 590, 616, 649, 700, 770, 784, 826, 880, 944, 980, 1078, 1100, 1180, 1225, 1232, 1298, 1400, 1475, 1540, 1652, 1925, 1960, 2065, 2156, 2200, 2360, 2450, 2596, 2695, 2800, 2891, 2950, 3080, 3245, 3304, 3850, 3920, 4130, 4312, 4400, 4543, 4720, 4900, 5192, 5390, 5782, 5900, 6160, 6490, 6608, 7700, 8260, 8624, 9086, 9800, 10325, 10384, 10780, 11564, 11800, 12980, 13475, 14455, 15400, 16225, 16520, 18172, 19600, 20650, 21560, 22715, 23128, 23600, 25960, 26950, 28910, 30800, 31801, 32450, 33040, 36344, 41300, 43120, 45430, 46256, 51920, 53900, 57820, 63602, 64900, 72275, 72688, 82600, 90860, 107800, 113575, 115640, 127204, 129800, 144550, 159005, 165200, 181720, 215600, 227150, 231280, 254408, 259600, 289100, 318010, 363440, 454300, 508816, 578200, 636020, 795025, 908600, 1156400, 1272040, 1590050, 1817200, 2544080, 3180100, 6360200, 12720400]

約数ペア:

[(1, 12720400), (2, 6360200), (4, 3180100), (5, 2544080), (7, 1817200), (8, 1590050), (10, 1272040), (11, 1156400), (14, 908600), (16, 795025), (20, 636020), (22, 578200), (25, 508816), (28, 454300), (35, 363440), (40, 318010), (44, 289100), (49, 259600), (50, 254408), (55, 231280), (56, 227150), (59, 215600), (70, 181720), (77, 165200), (80, 159005), (88, 144550), (98, 129800), (100, 127204), (110, 115640), (112, 113575), (118, 107800), (140, 90860), (154, 82600), (175, 72688), (176, 72275), (196, 64900), (200, 63602), (220, 57820), (236, 53900), (245, 51920), (275, 46256), (280, 45430), (295, 43120), (308, 41300), (350, 36344), (385, 33040), (392, 32450), (400, 31801), (413, 30800), (440, 28910), (472, 26950), (490, 25960), (539, 23600), (550, 23128), (560, 22715), (590, 21560), (616, 20650), (649, 19600), (700, 18172), (770, 16520), (784, 16225), (826, 15400), (880, 14455), (944, 13475), (980, 12980), (1078, 11800), (1100, 11564), (1180, 10780), (1225, 10384), (1232, 10325), (1298, 9800), (1400, 9086), (1475, 8624), (1540, 8260), (1652, 7700), (1925, 6608), (1960, 6490), (2065, 6160), (2156, 5900), (2200, 5782), (2360, 5390), (2450, 5192), (2596, 4900), (2695, 4720), (2800, 4543), (2891, 4400), (2950, 4312), (3080, 4130), (3245, 3920), (3304, 3850)]