281393280

素因数分解:

$2^7\times 3^2\times 5^1\times 7^2\times {\mathrm{997}}^1$

素因数の和:1036

約数の個数: 288

約数和(自身を含む): 1131462540

約数和(自身を除く): 850069260

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, 49, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 98, 105, 112, 120, 126, 128, 140, 144, 147, 160, 168, 180, 192, 196, 210, 224, 240, 245, 252, 280, 288, 294, 315, 320, 336, 360, 384, 392, 420, 441, 448, 480, 490, 504, 560, 576, 588, 630, 640, 672, 720, 735, 784, 840, 882, 896, 960, 980, 997, 1008, 1120, 1152, 1176, 1260, 1344, 1440, 1470, 1568, 1680, 1764, 1920, 1960, 1994, 2016, 2205, 2240, 2352, 2520, 2688, 2880, 2940, 2991, 3136, 3360, 3528, 3920, 3988, 4032, 4410, 4480, 4704, 4985, 5040, 5760, 5880, 5982, 6272, 6720, 6979, 7056, 7840, 7976, 8064, 8820, 8973, 9408, 9970, 10080, 11760, 11964, 13440, 13958, 14112, 14955, 15680, 15952, 17640, 17946, 18816, 19940, 20160, 20937, 23520, 23928, 27916, 28224, 29910, 31360, 31904, 34895, 35280, 35892, 39880, 40320, 41874, 44865, 47040, 47856, 48853, 55832, 56448, 59820, 62811, 63808, 69790, 70560, 71784, 79760, 83748, 89730, 94080, 95712, 97706, 104685, 111664, 119640, 125622, 127616, 139580, 141120, 143568, 146559, 159520, 167496, 179460, 191424, 195412, 209370, 223328, 239280, 244265, 251244, 279160, 282240, 287136, 293118, 314055, 319040, 334992, 358920, 382848, 390824, 418740, 439677, 446656, 478560, 488530, 502488, 558320, 574272, 586236, 628110, 638080, 669984, 717840, 732795, 781648, 837480, 879354, 893312, 957120, 977060, 1004976, 1116640, 1148544, 1172472, 1256220, 1339968, 1435680, 1465590, 1563296, 1674960, 1758708, 1914240, 1954120, 2009952, 2198385, 2233280, 2344944, 2512440, 2679936, 2871360, 2931180, 3126592, 3349920, 3517416, 3908240, 4019904, 4396770, 4466560, 4689888, 5024880, 5742720, 5862360, 6253184, 6699840, 7034832, 7816480, 8039808, 8793540, 9379776, 10049760, 11724720, 13399680, 14069664, 15632960, 17587080, 18759552, 20099520, 23449440, 28139328, 31265920, 35174160, 40199040, 46898880, 56278656, 70348320, 93797760, 140696640, 281393280]

約数ペア:

[(1, 281393280), (2, 140696640), (3, 93797760), (4, 70348320), (5, 56278656), (6, 46898880), (7, 40199040), (8, 35174160), (9, 31265920), (10, 28139328), (12, 23449440), (14, 20099520), (15, 18759552), (16, 17587080), (18, 15632960), (20, 14069664), (21, 13399680), (24, 11724720), (28, 10049760), (30, 9379776), (32, 8793540), (35, 8039808), (36, 7816480), (40, 7034832), (42, 6699840), (45, 6253184), (48, 5862360), (49, 5742720), (56, 5024880), (60, 4689888), (63, 4466560), (64, 4396770), (70, 4019904), (72, 3908240), (80, 3517416), (84, 3349920), (90, 3126592), (96, 2931180), (98, 2871360), (105, 2679936), (112, 2512440), (120, 2344944), (126, 2233280), (128, 2198385), (140, 2009952), (144, 1954120), (147, 1914240), (160, 1758708), (168, 1674960), (180, 1563296), (192, 1465590), (196, 1435680), (210, 1339968), (224, 1256220), (240, 1172472), (245, 1148544), (252, 1116640), (280, 1004976), (288, 977060), (294, 957120), (315, 893312), (320, 879354), (336, 837480), (360, 781648), (384, 732795), (392, 717840), (420, 669984), (441, 638080), (448, 628110), (480, 586236), (490, 574272), (504, 558320), (560, 502488), (576, 488530), (588, 478560), (630, 446656), (640, 439677), (672, 418740), (720, 390824), (735, 382848), (784, 358920), (840, 334992), (882, 319040), (896, 314055), (960, 293118), (980, 287136), (997, 282240), (1008, 279160), (1120, 251244), (1152, 244265), (1176, 239280), (1260, 223328), (1344, 209370), (1440, 195412), (1470, 191424), (1568, 179460), (1680, 167496), (1764, 159520), (1920, 146559), (1960, 143568), (1994, 141120), (2016, 139580), (2205, 127616), (2240, 125622), (2352, 119640), (2520, 111664), (2688, 104685), (2880, 97706), (2940, 95712), (2991, 94080), (3136, 89730), (3360, 83748), (3528, 79760), (3920, 71784), (3988, 70560), (4032, 69790), (4410, 63808), (4480, 62811), (4704, 59820), (4985, 56448), (5040, 55832), (5760, 48853), (5880, 47856), (5982, 47040), (6272, 44865), (6720, 41874), (6979, 40320), (7056, 39880), (7840, 35892), (7976, 35280), (8064, 34895), (8820, 31904), (8973, 31360), (9408, 29910), (9970, 28224), (10080, 27916), (11760, 23928), (11964, 23520), (13440, 20937), (13958, 20160), (14112, 19940), (14955, 18816), (15680, 17946), (15952, 17640)]