31391360

素因数分解:

$2^7\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:64

約数の個数: 256

約数和(自身を含む): 102816000

約数和(自身を除く): 71424640

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 32, 35, 40, 44, 49, 52, 55, 56, 64, 65, 70, 77, 80, 88, 91, 98, 104, 110, 112, 128, 130, 140, 143, 154, 160, 176, 182, 196, 208, 220, 224, 245, 260, 280, 286, 308, 320, 343, 352, 364, 385, 392, 416, 440, 448, 455, 490, 520, 539, 560, 572, 616, 637, 640, 686, 704, 715, 728, 770, 784, 832, 880, 896, 910, 980, 1001, 1040, 1078, 1120, 1144, 1232, 1274, 1372, 1408, 1430, 1456, 1540, 1568, 1664, 1715, 1760, 1820, 1960, 2002, 2080, 2156, 2240, 2288, 2464, 2548, 2695, 2744, 2860, 2912, 3080, 3136, 3185, 3430, 3520, 3640, 3773, 3920, 4004, 4160, 4312, 4459, 4480, 4576, 4928, 5005, 5096, 5390, 5488, 5720, 5824, 6160, 6272, 6370, 6860, 7007, 7040, 7280, 7546, 7840, 8008, 8320, 8624, 8918, 9152, 9856, 10010, 10192, 10780, 10976, 11440, 11648, 12320, 12740, 13720, 14014, 14560, 15092, 15680, 16016, 17248, 17836, 18304, 18865, 20020, 20384, 21560, 21952, 22295, 22880, 24640, 25480, 27440, 28028, 29120, 30184, 31360, 32032, 34496, 35035, 35672, 37730, 40040, 40768, 43120, 43904, 44590, 45760, 49049, 49280, 50960, 54880, 56056, 58240, 60368, 64064, 68992, 70070, 71344, 75460, 80080, 81536, 86240, 89180, 91520, 98098, 101920, 109760, 112112, 120736, 128128, 140140, 142688, 150920, 160160, 172480, 178360, 196196, 203840, 219520, 224224, 241472, 245245, 280280, 285376, 301840, 320320, 344960, 356720, 392392, 407680, 448448, 482944, 490490, 560560, 570752, 603680, 640640, 713440, 784784, 896896, 980980, 1121120, 1207360, 1426880, 1569568, 1961960, 2242240, 2414720, 2853760, 3139136, 3923920, 4484480, 6278272, 7847840, 15695680, 31391360]

約数ペア:

[(1, 31391360), (2, 15695680), (4, 7847840), (5, 6278272), (7, 4484480), (8, 3923920), (10, 3139136), (11, 2853760), (13, 2414720), (14, 2242240), (16, 1961960), (20, 1569568), (22, 1426880), (26, 1207360), (28, 1121120), (32, 980980), (35, 896896), (40, 784784), (44, 713440), (49, 640640), (52, 603680), (55, 570752), (56, 560560), (64, 490490), (65, 482944), (70, 448448), (77, 407680), (80, 392392), (88, 356720), (91, 344960), (98, 320320), (104, 301840), (110, 285376), (112, 280280), (128, 245245), (130, 241472), (140, 224224), (143, 219520), (154, 203840), (160, 196196), (176, 178360), (182, 172480), (196, 160160), (208, 150920), (220, 142688), (224, 140140), (245, 128128), (260, 120736), (280, 112112), (286, 109760), (308, 101920), (320, 98098), (343, 91520), (352, 89180), (364, 86240), (385, 81536), (392, 80080), (416, 75460), (440, 71344), (448, 70070), (455, 68992), (490, 64064), (520, 60368), (539, 58240), (560, 56056), (572, 54880), (616, 50960), (637, 49280), (640, 49049), (686, 45760), (704, 44590), (715, 43904), (728, 43120), (770, 40768), (784, 40040), (832, 37730), (880, 35672), (896, 35035), (910, 34496), (980, 32032), (1001, 31360), (1040, 30184), (1078, 29120), (1120, 28028), (1144, 27440), (1232, 25480), (1274, 24640), (1372, 22880), (1408, 22295), (1430, 21952), (1456, 21560), (1540, 20384), (1568, 20020), (1664, 18865), (1715, 18304), (1760, 17836), (1820, 17248), (1960, 16016), (2002, 15680), (2080, 15092), (2156, 14560), (2240, 14014), (2288, 13720), (2464, 12740), (2548, 12320), (2695, 11648), (2744, 11440), (2860, 10976), (2912, 10780), (3080, 10192), (3136, 10010), (3185, 9856), (3430, 9152), (3520, 8918), (3640, 8624), (3773, 8320), (3920, 8008), (4004, 7840), (4160, 7546), (4312, 7280), (4459, 7040), (4480, 7007), (4576, 6860), (4928, 6370), (5005, 6272), (5096, 6160), (5390, 5824), (5488, 5720)]