81450720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:282

約数の個数: 288

約数和(自身を含む): 316461600

約数和(自身を除く): 235010880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 32, 36, 38, 39, 40, 45, 48, 52, 57, 60, 65, 72, 76, 78, 80, 90, 95, 96, 104, 114, 117, 120, 130, 144, 152, 156, 160, 171, 180, 190, 195, 208, 228, 229, 234, 240, 247, 260, 285, 288, 304, 312, 342, 360, 380, 390, 416, 456, 458, 468, 480, 494, 520, 570, 585, 608, 624, 684, 687, 720, 741, 760, 780, 855, 912, 916, 936, 988, 1040, 1140, 1145, 1170, 1235, 1248, 1368, 1374, 1440, 1482, 1520, 1560, 1710, 1824, 1832, 1872, 1976, 2061, 2080, 2223, 2280, 2290, 2340, 2470, 2736, 2748, 2964, 2977, 3040, 3120, 3420, 3435, 3664, 3705, 3744, 3952, 4122, 4351, 4446, 4560, 4580, 4680, 4940, 5472, 5496, 5928, 5954, 6240, 6840, 6870, 7328, 7410, 7904, 8244, 8702, 8892, 8931, 9120, 9160, 9360, 9880, 10305, 10992, 11115, 11856, 11908, 13053, 13680, 13740, 14820, 14885, 16488, 17404, 17784, 17862, 18320, 18720, 19760, 20610, 21755, 21984, 22230, 23712, 23816, 26106, 26793, 27360, 27480, 29640, 29770, 32976, 34808, 35568, 35724, 36640, 39159, 39520, 41220, 43510, 44460, 44655, 47632, 52212, 53586, 54960, 56563, 59280, 59540, 65265, 65952, 69616, 71136, 71448, 78318, 82440, 87020, 88920, 89310, 95264, 104424, 107172, 109920, 113126, 118560, 119080, 130530, 133965, 139232, 142896, 156636, 164880, 169689, 174040, 177840, 178620, 195795, 208848, 214344, 226252, 238160, 261060, 267930, 282815, 285792, 313272, 329760, 339378, 348080, 355680, 357240, 391590, 417696, 428688, 452504, 476320, 509067, 522120, 535860, 565630, 626544, 678756, 696160, 714480, 783180, 848445, 857376, 905008, 1018134, 1044240, 1071720, 1131260, 1253088, 1357512, 1428960, 1566360, 1696890, 1810016, 2036268, 2088480, 2143440, 2262520, 2545335, 2715024, 3132720, 3393780, 4072536, 4286880, 4525040, 5090670, 5430048, 6265440, 6787560, 8145072, 9050080, 10181340, 13575120, 16290144, 20362680, 27150240, 40725360, 81450720]

約数ペア:

[(1, 81450720), (2, 40725360), (3, 27150240), (4, 20362680), (5, 16290144), (6, 13575120), (8, 10181340), (9, 9050080), (10, 8145072), (12, 6787560), (13, 6265440), (15, 5430048), (16, 5090670), (18, 4525040), (19, 4286880), (20, 4072536), (24, 3393780), (26, 3132720), (30, 2715024), (32, 2545335), (36, 2262520), (38, 2143440), (39, 2088480), (40, 2036268), (45, 1810016), (48, 1696890), (52, 1566360), (57, 1428960), (60, 1357512), (65, 1253088), (72, 1131260), (76, 1071720), (78, 1044240), (80, 1018134), (90, 905008), (95, 857376), (96, 848445), (104, 783180), (114, 714480), (117, 696160), (120, 678756), (130, 626544), (144, 565630), (152, 535860), (156, 522120), (160, 509067), (171, 476320), (180, 452504), (190, 428688), (195, 417696), (208, 391590), (228, 357240), (229, 355680), (234, 348080), (240, 339378), (247, 329760), (260, 313272), (285, 285792), (288, 282815), (304, 267930), (312, 261060), (342, 238160), (360, 226252), (380, 214344), (390, 208848), (416, 195795), (456, 178620), (458, 177840), (468, 174040), (480, 169689), (494, 164880), (520, 156636), (570, 142896), (585, 139232), (608, 133965), (624, 130530), (684, 119080), (687, 118560), (720, 113126), (741, 109920), (760, 107172), (780, 104424), (855, 95264), (912, 89310), (916, 88920), (936, 87020), (988, 82440), (1040, 78318), (1140, 71448), (1145, 71136), (1170, 69616), (1235, 65952), (1248, 65265), (1368, 59540), (1374, 59280), (1440, 56563), (1482, 54960), (1520, 53586), (1560, 52212), (1710, 47632), (1824, 44655), (1832, 44460), (1872, 43510), (1976, 41220), (2061, 39520), (2080, 39159), (2223, 36640), (2280, 35724), (2290, 35568), (2340, 34808), (2470, 32976), (2736, 29770), (2748, 29640), (2964, 27480), (2977, 27360), (3040, 26793), (3120, 26106), (3420, 23816), (3435, 23712), (3664, 22230), (3705, 21984), (3744, 21755), (3952, 20610), (4122, 19760), (4351, 18720), (4446, 18320), (4560, 17862), (4580, 17784), (4680, 17404), (4940, 16488), (5472, 14885), (5496, 14820), (5928, 13740), (5954, 13680), (6240, 13053), (6840, 11908), (6870, 11856), (7328, 11115), (7410, 10992), (7904, 10305), (8244, 9880), (8702, 9360), (8892, 9160), (8931, 9120)]