21349440

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{353}}^1$

素因数の和:386

約数の個数: 224

約数和(自身を含む): 86319360

約数和(自身を除く): 64969920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 353, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 672, 706, 720, 756, 840, 864, 945, 960, 1008, 1059, 1080, 1120, 1260, 1344, 1412, 1440, 1512, 1680, 1728, 1765, 1890, 2016, 2118, 2160, 2240, 2471, 2520, 2824, 2880, 3024, 3177, 3360, 3530, 3780, 4032, 4236, 4320, 4942, 5040, 5295, 5648, 6048, 6354, 6720, 7060, 7413, 7560, 8472, 8640, 9531, 9884, 10080, 10590, 11296, 12096, 12355, 12708, 14120, 14826, 15120, 15885, 16944, 19062, 19768, 20160, 21180, 22239, 22592, 24710, 25416, 28240, 29652, 30240, 31770, 33888, 37065, 38124, 39536, 42360, 44478, 47655, 49420, 50832, 56480, 59304, 60480, 63540, 66717, 67776, 74130, 76248, 79072, 84720, 88956, 95310, 98840, 101664, 111195, 112960, 118608, 127080, 133434, 148260, 152496, 158144, 169440, 177912, 190620, 197680, 203328, 222390, 237216, 254160, 266868, 296520, 304992, 333585, 338880, 355824, 381240, 395360, 444780, 474432, 508320, 533736, 593040, 609984, 667170, 711648, 762480, 790720, 889560, 1016640, 1067472, 1186080, 1334340, 1423296, 1524960, 1779120, 2134944, 2372160, 2668680, 3049920, 3558240, 4269888, 5337360, 7116480, 10674720, 21349440]

約数ペア:

[(1, 21349440), (2, 10674720), (3, 7116480), (4, 5337360), (5, 4269888), (6, 3558240), (7, 3049920), (8, 2668680), (9, 2372160), (10, 2134944), (12, 1779120), (14, 1524960), (15, 1423296), (16, 1334340), (18, 1186080), (20, 1067472), (21, 1016640), (24, 889560), (27, 790720), (28, 762480), (30, 711648), (32, 667170), (35, 609984), (36, 593040), (40, 533736), (42, 508320), (45, 474432), (48, 444780), (54, 395360), (56, 381240), (60, 355824), (63, 338880), (64, 333585), (70, 304992), (72, 296520), (80, 266868), (84, 254160), (90, 237216), (96, 222390), (105, 203328), (108, 197680), (112, 190620), (120, 177912), (126, 169440), (135, 158144), (140, 152496), (144, 148260), (160, 133434), (168, 127080), (180, 118608), (189, 112960), (192, 111195), (210, 101664), (216, 98840), (224, 95310), (240, 88956), (252, 84720), (270, 79072), (280, 76248), (288, 74130), (315, 67776), (320, 66717), (336, 63540), (353, 60480), (360, 59304), (378, 56480), (420, 50832), (432, 49420), (448, 47655), (480, 44478), (504, 42360), (540, 39536), (560, 38124), (576, 37065), (630, 33888), (672, 31770), (706, 30240), (720, 29652), (756, 28240), (840, 25416), (864, 24710), (945, 22592), (960, 22239), (1008, 21180), (1059, 20160), (1080, 19768), (1120, 19062), (1260, 16944), (1344, 15885), (1412, 15120), (1440, 14826), (1512, 14120), (1680, 12708), (1728, 12355), (1765, 12096), (1890, 11296), (2016, 10590), (2118, 10080), (2160, 9884), (2240, 9531), (2471, 8640), (2520, 8472), (2824, 7560), (2880, 7413), (3024, 7060), (3177, 6720), (3360, 6354), (3530, 6048), (3780, 5648), (4032, 5295), (4236, 5040), (4320, 4942)]