20451200

素因数分解:

$2^7\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1$

素因数の和:125

約数の個数: 192

約数和(自身を含む): 63745920

約数和(自身を除く): 43294720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 32, 35, 40, 44, 50, 55, 56, 64, 70, 77, 80, 83, 88, 100, 110, 112, 128, 140, 154, 160, 166, 175, 176, 200, 220, 224, 275, 280, 308, 320, 332, 350, 352, 385, 400, 415, 440, 448, 550, 560, 581, 616, 640, 664, 700, 704, 770, 800, 830, 880, 896, 913, 1100, 1120, 1162, 1232, 1328, 1400, 1408, 1540, 1600, 1660, 1760, 1826, 1925, 2075, 2200, 2240, 2324, 2464, 2656, 2800, 2905, 3080, 3200, 3320, 3520, 3652, 3850, 4150, 4400, 4480, 4565, 4648, 4928, 5312, 5600, 5810, 6160, 6391, 6640, 7040, 7304, 7700, 8300, 8800, 9130, 9296, 9856, 10624, 11200, 11620, 12320, 12782, 13280, 14525, 14608, 15400, 16600, 17600, 18260, 18592, 22400, 22825, 23240, 24640, 25564, 26560, 29050, 29216, 30800, 31955, 33200, 35200, 36520, 37184, 45650, 46480, 49280, 51128, 53120, 58100, 58432, 61600, 63910, 66400, 73040, 74368, 91300, 92960, 102256, 116200, 116864, 123200, 127820, 132800, 146080, 159775, 182600, 185920, 204512, 232400, 246400, 255640, 265600, 292160, 319550, 365200, 371840, 409024, 464800, 511280, 584320, 639100, 730400, 818048, 929600, 1022560, 1278200, 1460800, 1859200, 2045120, 2556400, 2921600, 4090240, 5112800, 10225600, 20451200]

約数ペア:

[(1, 20451200), (2, 10225600), (4, 5112800), (5, 4090240), (7, 2921600), (8, 2556400), (10, 2045120), (11, 1859200), (14, 1460800), (16, 1278200), (20, 1022560), (22, 929600), (25, 818048), (28, 730400), (32, 639100), (35, 584320), (40, 511280), (44, 464800), (50, 409024), (55, 371840), (56, 365200), (64, 319550), (70, 292160), (77, 265600), (80, 255640), (83, 246400), (88, 232400), (100, 204512), (110, 185920), (112, 182600), (128, 159775), (140, 146080), (154, 132800), (160, 127820), (166, 123200), (175, 116864), (176, 116200), (200, 102256), (220, 92960), (224, 91300), (275, 74368), (280, 73040), (308, 66400), (320, 63910), (332, 61600), (350, 58432), (352, 58100), (385, 53120), (400, 51128), (415, 49280), (440, 46480), (448, 45650), (550, 37184), (560, 36520), (581, 35200), (616, 33200), (640, 31955), (664, 30800), (700, 29216), (704, 29050), (770, 26560), (800, 25564), (830, 24640), (880, 23240), (896, 22825), (913, 22400), (1100, 18592), (1120, 18260), (1162, 17600), (1232, 16600), (1328, 15400), (1400, 14608), (1408, 14525), (1540, 13280), (1600, 12782), (1660, 12320), (1760, 11620), (1826, 11200), (1925, 10624), (2075, 9856), (2200, 9296), (2240, 9130), (2324, 8800), (2464, 8300), (2656, 7700), (2800, 7304), (2905, 7040), (3080, 6640), (3200, 6391), (3320, 6160), (3520, 5810), (3652, 5600), (3850, 5312), (4150, 4928), (4400, 4648), (4480, 4565)]