1640348640

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{461}}^1$

素因数の和:842

約数の個数: 288

約数和(自身を含む): 6429398976

約数和(自身を除く): 4789050336

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 353, 360, 420, 461, 480, 504, 560, 630, 672, 706, 720, 840, 922, 1008, 1059, 1120, 1260, 1383, 1412, 1440, 1680, 1765, 1844, 2016, 2118, 2305, 2471, 2520, 2766, 2824, 3177, 3227, 3360, 3530, 3688, 4149, 4236, 4610, 4942, 5040, 5295, 5532, 5648, 6354, 6454, 6915, 7060, 7376, 7413, 8298, 8472, 9220, 9681, 9884, 10080, 10590, 11064, 11296, 12355, 12708, 12908, 13830, 14120, 14752, 14826, 15885, 16135, 16596, 16944, 18440, 19362, 19768, 20745, 21180, 22128, 22239, 24710, 25416, 25816, 27660, 28240, 29043, 29652, 31770, 32270, 33192, 33888, 36880, 37065, 38724, 39536, 41490, 42360, 44256, 44478, 48405, 49420, 50832, 51632, 55320, 56480, 58086, 59304, 63540, 64540, 66384, 73760, 74130, 77448, 79072, 82980, 84720, 88956, 96810, 98840, 101664, 103264, 110640, 111195, 116172, 118608, 127080, 129080, 132768, 145215, 148260, 154896, 162733, 165960, 169440, 177912, 193620, 197680, 221280, 222390, 232344, 237216, 254160, 258160, 290430, 296520, 309792, 325466, 331920, 355824, 387240, 395360, 444780, 464688, 488199, 508320, 516320, 580860, 593040, 650932, 663840, 711648, 774480, 813665, 889560, 929376, 976398, 1139131, 1161720, 1186080, 1301864, 1464597, 1548960, 1627330, 1779120, 1952796, 2278262, 2323440, 2440995, 2603728, 2929194, 3254660, 3417393, 3558240, 3905592, 4556524, 4646880, 4881990, 5207456, 5695655, 5858388, 6509320, 6834786, 7322985, 7811184, 9113048, 9763980, 10252179, 11391310, 11716776, 13018640, 13669572, 14645970, 15622368, 17086965, 18226096, 19527960, 20504358, 22782620, 23433552, 26037280, 27339144, 29291940, 34173930, 36452192, 39055920, 41008716, 45565240, 46867104, 51260895, 54678288, 58583880, 68347860, 78111840, 82017432, 91130480, 102521790, 109356576, 117167760, 136695720, 164034864, 182260960, 205043580, 234335520, 273391440, 328069728, 410087160, 546782880, 820174320, 1640348640]

約数ペア:

[(1, 1640348640), (2, 820174320), (3, 546782880), (4, 410087160), (5, 328069728), (6, 273391440), (7, 234335520), (8, 205043580), (9, 182260960), (10, 164034864), (12, 136695720), (14, 117167760), (15, 109356576), (16, 102521790), (18, 91130480), (20, 82017432), (21, 78111840), (24, 68347860), (28, 58583880), (30, 54678288), (32, 51260895), (35, 46867104), (36, 45565240), (40, 41008716), (42, 39055920), (45, 36452192), (48, 34173930), (56, 29291940), (60, 27339144), (63, 26037280), (70, 23433552), (72, 22782620), (80, 20504358), (84, 19527960), (90, 18226096), (96, 17086965), (105, 15622368), (112, 14645970), (120, 13669572), (126, 13018640), (140, 11716776), (144, 11391310), (160, 10252179), (168, 9763980), (180, 9113048), (210, 7811184), (224, 7322985), (240, 6834786), (252, 6509320), (280, 5858388), (288, 5695655), (315, 5207456), (336, 4881990), (353, 4646880), (360, 4556524), (420, 3905592), (461, 3558240), (480, 3417393), (504, 3254660), (560, 2929194), (630, 2603728), (672, 2440995), (706, 2323440), (720, 2278262), (840, 1952796), (922, 1779120), (1008, 1627330), (1059, 1548960), (1120, 1464597), (1260, 1301864), (1383, 1186080), (1412, 1161720), (1440, 1139131), (1680, 976398), (1765, 929376), (1844, 889560), (2016, 813665), (2118, 774480), (2305, 711648), (2471, 663840), (2520, 650932), (2766, 593040), (2824, 580860), (3177, 516320), (3227, 508320), (3360, 488199), (3530, 464688), (3688, 444780), (4149, 395360), (4236, 387240), (4610, 355824), (4942, 331920), (5040, 325466), (5295, 309792), (5532, 296520), (5648, 290430), (6354, 258160), (6454, 254160), (6915, 237216), (7060, 232344), (7376, 222390), (7413, 221280), (8298, 197680), (8472, 193620), (9220, 177912), (9681, 169440), (9884, 165960), (10080, 162733), (10590, 154896), (11064, 148260), (11296, 145215), (12355, 132768), (12708, 129080), (12908, 127080), (13830, 118608), (14120, 116172), (14752, 111195), (14826, 110640), (15885, 103264), (16135, 101664), (16596, 98840), (16944, 96810), (18440, 88956), (19362, 84720), (19768, 82980), (20745, 79072), (21180, 77448), (22128, 74130), (22239, 73760), (24710, 66384), (25416, 64540), (25816, 63540), (27660, 59304), (28240, 58086), (29043, 56480), (29652, 55320), (31770, 51632), (32270, 50832), (33192, 49420), (33888, 48405), (36880, 44478), (37065, 44256), (38724, 42360), (39536, 41490)]