20646720

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:197

約数の個数: 168

約数和(自身を含む): 72749664

約数和(自身を除く): 52102944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 67, 72, 80, 90, 96, 107, 120, 134, 144, 160, 180, 192, 201, 214, 240, 268, 288, 320, 321, 335, 360, 402, 428, 480, 535, 536, 576, 603, 642, 670, 720, 804, 856, 960, 963, 1005, 1070, 1072, 1206, 1284, 1340, 1440, 1605, 1608, 1712, 1926, 2010, 2140, 2144, 2412, 2568, 2680, 2880, 3015, 3210, 3216, 3424, 3852, 4020, 4280, 4288, 4815, 4824, 5136, 5360, 6030, 6420, 6432, 6848, 7169, 7704, 8040, 8560, 9630, 9648, 10272, 10720, 12060, 12840, 12864, 14338, 15408, 16080, 17120, 19260, 19296, 20544, 21440, 21507, 24120, 25680, 28676, 30816, 32160, 34240, 35845, 38520, 38592, 43014, 48240, 51360, 57352, 61632, 64320, 64521, 71690, 77040, 86028, 96480, 102720, 107535, 114704, 129042, 143380, 154080, 172056, 192960, 215070, 229408, 258084, 286760, 308160, 322605, 344112, 430140, 458816, 516168, 573520, 645210, 688224, 860280, 1032336, 1147040, 1290420, 1376448, 1720560, 2064672, 2294080, 2580840, 3441120, 4129344, 5161680, 6882240, 10323360, 20646720]

約数ペア:

[(1, 20646720), (2, 10323360), (3, 6882240), (4, 5161680), (5, 4129344), (6, 3441120), (8, 2580840), (9, 2294080), (10, 2064672), (12, 1720560), (15, 1376448), (16, 1290420), (18, 1147040), (20, 1032336), (24, 860280), (30, 688224), (32, 645210), (36, 573520), (40, 516168), (45, 458816), (48, 430140), (60, 344112), (64, 322605), (67, 308160), (72, 286760), (80, 258084), (90, 229408), (96, 215070), (107, 192960), (120, 172056), (134, 154080), (144, 143380), (160, 129042), (180, 114704), (192, 107535), (201, 102720), (214, 96480), (240, 86028), (268, 77040), (288, 71690), (320, 64521), (321, 64320), (335, 61632), (360, 57352), (402, 51360), (428, 48240), (480, 43014), (535, 38592), (536, 38520), (576, 35845), (603, 34240), (642, 32160), (670, 30816), (720, 28676), (804, 25680), (856, 24120), (960, 21507), (963, 21440), (1005, 20544), (1070, 19296), (1072, 19260), (1206, 17120), (1284, 16080), (1340, 15408), (1440, 14338), (1605, 12864), (1608, 12840), (1712, 12060), (1926, 10720), (2010, 10272), (2140, 9648), (2144, 9630), (2412, 8560), (2568, 8040), (2680, 7704), (2880, 7169), (3015, 6848), (3210, 6432), (3216, 6420), (3424, 6030), (3852, 5360), (4020, 5136), (4280, 4824), (4288, 4815)]