81371680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 192

約数和(自身を含む): 228614400

約数和(自身を除く): 147242720

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 29, 32, 38, 40, 52, 58, 65, 71, 76, 80, 95, 104, 116, 130, 142, 145, 152, 160, 190, 208, 232, 247, 260, 284, 290, 304, 355, 377, 380, 416, 464, 494, 520, 551, 568, 580, 608, 710, 754, 760, 923, 928, 988, 1040, 1102, 1136, 1160, 1235, 1349, 1420, 1508, 1520, 1846, 1885, 1976, 2059, 2080, 2204, 2272, 2320, 2470, 2698, 2755, 2840, 3016, 3040, 3692, 3770, 3952, 4118, 4408, 4615, 4640, 4940, 5396, 5510, 5680, 6032, 6745, 7163, 7384, 7540, 7904, 8236, 8816, 9230, 9880, 10295, 10792, 11020, 11360, 12064, 13490, 14326, 14768, 15080, 16472, 17537, 17632, 18460, 19760, 20590, 21584, 22040, 26767, 26980, 28652, 29536, 30160, 32944, 35074, 35815, 36920, 39121, 39520, 41180, 43168, 44080, 53534, 53960, 57304, 60320, 65888, 70148, 71630, 73840, 78242, 82360, 87685, 88160, 107068, 107920, 114608, 133835, 140296, 143260, 147680, 156484, 164720, 175370, 195605, 214136, 215840, 229216, 267670, 280592, 286520, 312968, 329440, 350740, 391210, 428272, 508573, 535340, 561184, 573040, 625936, 701480, 782420, 856544, 1017146, 1070680, 1146080, 1251872, 1402960, 1564840, 2034292, 2141360, 2542865, 2805920, 3129680, 4068584, 4282720, 5085730, 6259360, 8137168, 10171460, 16274336, 20342920, 40685840, 81371680]

約数ペア:

[(1, 81371680), (2, 40685840), (4, 20342920), (5, 16274336), (8, 10171460), (10, 8137168), (13, 6259360), (16, 5085730), (19, 4282720), (20, 4068584), (26, 3129680), (29, 2805920), (32, 2542865), (38, 2141360), (40, 2034292), (52, 1564840), (58, 1402960), (65, 1251872), (71, 1146080), (76, 1070680), (80, 1017146), (95, 856544), (104, 782420), (116, 701480), (130, 625936), (142, 573040), (145, 561184), (152, 535340), (160, 508573), (190, 428272), (208, 391210), (232, 350740), (247, 329440), (260, 312968), (284, 286520), (290, 280592), (304, 267670), (355, 229216), (377, 215840), (380, 214136), (416, 195605), (464, 175370), (494, 164720), (520, 156484), (551, 147680), (568, 143260), (580, 140296), (608, 133835), (710, 114608), (754, 107920), (760, 107068), (923, 88160), (928, 87685), (988, 82360), (1040, 78242), (1102, 73840), (1136, 71630), (1160, 70148), (1235, 65888), (1349, 60320), (1420, 57304), (1508, 53960), (1520, 53534), (1846, 44080), (1885, 43168), (1976, 41180), (2059, 39520), (2080, 39121), (2204, 36920), (2272, 35815), (2320, 35074), (2470, 32944), (2698, 30160), (2755, 29536), (2840, 28652), (3016, 26980), (3040, 26767), (3692, 22040), (3770, 21584), (3952, 20590), (4118, 19760), (4408, 18460), (4615, 17632), (4640, 17537), (4940, 16472), (5396, 15080), (5510, 14768), (5680, 14326), (6032, 13490), (6745, 12064), (7163, 11360), (7384, 11020), (7540, 10792), (7904, 10295), (8236, 9880), (8816, 9230)]