20662320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^3\times {\mathrm{251}}^1$

素因数の和:288

約数の個数: 160

約数和(自身を含む): 74995200

約数和(自身を除く): 54332880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 251, 280, 294, 336, 343, 392, 420, 490, 502, 560, 588, 686, 735, 753, 784, 840, 980, 1004, 1029, 1176, 1255, 1372, 1470, 1506, 1680, 1715, 1757, 1960, 2008, 2058, 2352, 2510, 2744, 2940, 3012, 3430, 3514, 3765, 3920, 4016, 4116, 5020, 5145, 5271, 5488, 5880, 6024, 6860, 7028, 7530, 8232, 8785, 10040, 10290, 10542, 11760, 12048, 12299, 13720, 14056, 15060, 16464, 17570, 20080, 20580, 21084, 24598, 26355, 27440, 28112, 30120, 35140, 36897, 41160, 42168, 49196, 52710, 60240, 61495, 70280, 73794, 82320, 84336, 86093, 98392, 105420, 122990, 140560, 147588, 172186, 184485, 196784, 210840, 245980, 258279, 295176, 344372, 368970, 421680, 430465, 491960, 516558, 590352, 688744, 737940, 860930, 983920, 1033116, 1291395, 1377488, 1475880, 1721860, 2066232, 2582790, 2951760, 3443720, 4132464, 5165580, 6887440, 10331160, 20662320]

約数ペア:

[(1, 20662320), (2, 10331160), (3, 6887440), (4, 5165580), (5, 4132464), (6, 3443720), (7, 2951760), (8, 2582790), (10, 2066232), (12, 1721860), (14, 1475880), (15, 1377488), (16, 1291395), (20, 1033116), (21, 983920), (24, 860930), (28, 737940), (30, 688744), (35, 590352), (40, 516558), (42, 491960), (48, 430465), (49, 421680), (56, 368970), (60, 344372), (70, 295176), (80, 258279), (84, 245980), (98, 210840), (105, 196784), (112, 184485), (120, 172186), (140, 147588), (147, 140560), (168, 122990), (196, 105420), (210, 98392), (240, 86093), (245, 84336), (251, 82320), (280, 73794), (294, 70280), (336, 61495), (343, 60240), (392, 52710), (420, 49196), (490, 42168), (502, 41160), (560, 36897), (588, 35140), (686, 30120), (735, 28112), (753, 27440), (784, 26355), (840, 24598), (980, 21084), (1004, 20580), (1029, 20080), (1176, 17570), (1255, 16464), (1372, 15060), (1470, 14056), (1506, 13720), (1680, 12299), (1715, 12048), (1757, 11760), (1960, 10542), (2008, 10290), (2058, 10040), (2352, 8785), (2510, 8232), (2744, 7530), (2940, 7028), (3012, 6860), (3430, 6024), (3514, 5880), (3765, 5488), (3920, 5271), (4016, 5145), (4116, 5020)]