78808080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:138

約数の個数: 240

約数和(自身を含む): 277750080

約数和(自身を除く): 198942000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 29, 30, 39, 40, 48, 52, 58, 60, 65, 67, 78, 80, 87, 104, 116, 120, 130, 134, 145, 156, 169, 174, 195, 201, 208, 232, 240, 260, 268, 290, 312, 335, 338, 348, 377, 390, 402, 435, 464, 507, 520, 536, 580, 624, 670, 676, 696, 754, 780, 804, 845, 870, 871, 1005, 1014, 1040, 1072, 1131, 1160, 1340, 1352, 1392, 1508, 1560, 1608, 1690, 1740, 1742, 1885, 1943, 2010, 2028, 2262, 2320, 2535, 2613, 2680, 2704, 3016, 3120, 3216, 3380, 3480, 3484, 3770, 3886, 4020, 4056, 4355, 4524, 4901, 5070, 5226, 5360, 5655, 5829, 6032, 6760, 6960, 6968, 7540, 7772, 8040, 8112, 8710, 9048, 9715, 9802, 10140, 10452, 11310, 11323, 11658, 13065, 13520, 13936, 14703, 15080, 15544, 16080, 17420, 18096, 19430, 19604, 20280, 20904, 22620, 22646, 23316, 24505, 25259, 26130, 29145, 29406, 30160, 31088, 33969, 34840, 38860, 39208, 40560, 41808, 45240, 45292, 46632, 49010, 50518, 52260, 56615, 58290, 58812, 67938, 69680, 73515, 75777, 77720, 78416, 90480, 90584, 93264, 98020, 101036, 104520, 113230, 116580, 117624, 126295, 135876, 147030, 151554, 155440, 169845, 181168, 196040, 202072, 209040, 226460, 233160, 235248, 252590, 271752, 294060, 303108, 328367, 339690, 378885, 392080, 404144, 452920, 466320, 505180, 543504, 588120, 606216, 656734, 679380, 757770, 905840, 985101, 1010360, 1176240, 1212432, 1313468, 1358760, 1515540, 1641835, 1970202, 2020720, 2626936, 2717520, 3031080, 3283670, 3940404, 4925505, 5253872, 6062160, 6567340, 7880808, 9851010, 13134680, 15761616, 19702020, 26269360, 39404040, 78808080]

約数ペア:

[(1, 78808080), (2, 39404040), (3, 26269360), (4, 19702020), (5, 15761616), (6, 13134680), (8, 9851010), (10, 7880808), (12, 6567340), (13, 6062160), (15, 5253872), (16, 4925505), (20, 3940404), (24, 3283670), (26, 3031080), (29, 2717520), (30, 2626936), (39, 2020720), (40, 1970202), (48, 1641835), (52, 1515540), (58, 1358760), (60, 1313468), (65, 1212432), (67, 1176240), (78, 1010360), (80, 985101), (87, 905840), (104, 757770), (116, 679380), (120, 656734), (130, 606216), (134, 588120), (145, 543504), (156, 505180), (169, 466320), (174, 452920), (195, 404144), (201, 392080), (208, 378885), (232, 339690), (240, 328367), (260, 303108), (268, 294060), (290, 271752), (312, 252590), (335, 235248), (338, 233160), (348, 226460), (377, 209040), (390, 202072), (402, 196040), (435, 181168), (464, 169845), (507, 155440), (520, 151554), (536, 147030), (580, 135876), (624, 126295), (670, 117624), (676, 116580), (696, 113230), (754, 104520), (780, 101036), (804, 98020), (845, 93264), (870, 90584), (871, 90480), (1005, 78416), (1014, 77720), (1040, 75777), (1072, 73515), (1131, 69680), (1160, 67938), (1340, 58812), (1352, 58290), (1392, 56615), (1508, 52260), (1560, 50518), (1608, 49010), (1690, 46632), (1740, 45292), (1742, 45240), (1885, 41808), (1943, 40560), (2010, 39208), (2028, 38860), (2262, 34840), (2320, 33969), (2535, 31088), (2613, 30160), (2680, 29406), (2704, 29145), (3016, 26130), (3120, 25259), (3216, 24505), (3380, 23316), (3480, 22646), (3484, 22620), (3770, 20904), (3886, 20280), (4020, 19604), (4056, 19430), (4355, 18096), (4524, 17420), (4901, 16080), (5070, 15544), (5226, 15080), (5360, 14703), (5655, 13936), (5829, 13520), (6032, 13065), (6760, 11658), (6960, 11323), (6968, 11310), (7540, 10452), (7772, 10140), (8040, 9802), (8112, 9715), (8710, 9048)]