20909280

素因数分解:

$2^5\times 3^1\times 5^1\times 7^3\times {\mathrm{127}}^1$

素因数の和:166

約数の個数: 192

約数和(自身を含む): 77414400

約数和(自身を除く): 56505120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 127, 140, 147, 160, 168, 196, 210, 224, 240, 245, 254, 280, 294, 336, 343, 381, 392, 420, 480, 490, 508, 560, 588, 635, 672, 686, 735, 762, 784, 840, 889, 980, 1016, 1029, 1120, 1176, 1270, 1372, 1470, 1524, 1568, 1680, 1715, 1778, 1905, 1960, 2032, 2058, 2352, 2540, 2667, 2744, 2940, 3048, 3360, 3430, 3556, 3810, 3920, 4064, 4116, 4445, 4704, 5080, 5145, 5334, 5488, 5880, 6096, 6223, 6860, 7112, 7620, 7840, 8232, 8890, 10160, 10290, 10668, 10976, 11760, 12192, 12446, 13335, 13720, 14224, 15240, 16464, 17780, 18669, 20320, 20580, 21336, 23520, 24892, 26670, 27440, 28448, 30480, 31115, 32928, 35560, 37338, 41160, 42672, 43561, 49784, 53340, 54880, 60960, 62230, 71120, 74676, 82320, 85344, 87122, 93345, 99568, 106680, 124460, 130683, 142240, 149352, 164640, 174244, 186690, 199136, 213360, 217805, 248920, 261366, 298704, 348488, 373380, 426720, 435610, 497840, 522732, 597408, 653415, 696976, 746760, 871220, 995680, 1045464, 1306830, 1393952, 1493520, 1742440, 2090928, 2613660, 2987040, 3484880, 4181856, 5227320, 6969760, 10454640, 20909280]

約数ペア:

[(1, 20909280), (2, 10454640), (3, 6969760), (4, 5227320), (5, 4181856), (6, 3484880), (7, 2987040), (8, 2613660), (10, 2090928), (12, 1742440), (14, 1493520), (15, 1393952), (16, 1306830), (20, 1045464), (21, 995680), (24, 871220), (28, 746760), (30, 696976), (32, 653415), (35, 597408), (40, 522732), (42, 497840), (48, 435610), (49, 426720), (56, 373380), (60, 348488), (70, 298704), (80, 261366), (84, 248920), (96, 217805), (98, 213360), (105, 199136), (112, 186690), (120, 174244), (127, 164640), (140, 149352), (147, 142240), (160, 130683), (168, 124460), (196, 106680), (210, 99568), (224, 93345), (240, 87122), (245, 85344), (254, 82320), (280, 74676), (294, 71120), (336, 62230), (343, 60960), (381, 54880), (392, 53340), (420, 49784), (480, 43561), (490, 42672), (508, 41160), (560, 37338), (588, 35560), (635, 32928), (672, 31115), (686, 30480), (735, 28448), (762, 27440), (784, 26670), (840, 24892), (889, 23520), (980, 21336), (1016, 20580), (1029, 20320), (1120, 18669), (1176, 17780), (1270, 16464), (1372, 15240), (1470, 14224), (1524, 13720), (1568, 13335), (1680, 12446), (1715, 12192), (1778, 11760), (1905, 10976), (1960, 10668), (2032, 10290), (2058, 10160), (2352, 8890), (2540, 8232), (2667, 7840), (2744, 7620), (2940, 7112), (3048, 6860), (3360, 6223), (3430, 6096), (3556, 5880), (3810, 5488), (3920, 5334), (4064, 5145), (4116, 5080), (4445, 4704)]