81234160

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 240

約数和(自身を含む): 247323456

約数和(自身を除く): 166089296

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 23, 28, 34, 35, 40, 46, 49, 53, 56, 68, 70, 80, 85, 92, 98, 106, 112, 115, 119, 136, 140, 161, 170, 184, 196, 212, 230, 238, 245, 265, 272, 280, 322, 340, 368, 371, 391, 392, 424, 460, 476, 490, 530, 560, 595, 644, 680, 742, 782, 784, 805, 833, 848, 901, 920, 952, 980, 1060, 1127, 1190, 1219, 1288, 1360, 1484, 1564, 1610, 1666, 1802, 1840, 1855, 1904, 1955, 1960, 2120, 2254, 2380, 2438, 2576, 2597, 2737, 2968, 3128, 3220, 3332, 3604, 3710, 3910, 3920, 4165, 4240, 4505, 4508, 4760, 4876, 5194, 5474, 5635, 5936, 6095, 6256, 6307, 6440, 6664, 7208, 7420, 7820, 8330, 8533, 9010, 9016, 9520, 9752, 10388, 10948, 11270, 12190, 12614, 12880, 12985, 13328, 13685, 14416, 14840, 15640, 16660, 17066, 18020, 18032, 19159, 19504, 20723, 20776, 21896, 22540, 24380, 25228, 25970, 27370, 29680, 31280, 31535, 33320, 34132, 36040, 38318, 41446, 41552, 42665, 43792, 44149, 45080, 48760, 50456, 51940, 54740, 59731, 63070, 66640, 68264, 72080, 76636, 82892, 85330, 88298, 90160, 95795, 97520, 100912, 103615, 103880, 109480, 119462, 126140, 136528, 145061, 153272, 165784, 170660, 176596, 191590, 207230, 207760, 218960, 220745, 238924, 252280, 290122, 298655, 306544, 331568, 341320, 353192, 383180, 414460, 441490, 477848, 504560, 580244, 597310, 682640, 706384, 725305, 766360, 828920, 882980, 955696, 1015427, 1160488, 1194620, 1450610, 1532720, 1657840, 1765960, 2030854, 2320976, 2389240, 2901220, 3531920, 4061708, 4778480, 5077135, 5802440, 8123416, 10154270, 11604880, 16246832, 20308540, 40617080, 81234160]

約数ペア:

[(1, 81234160), (2, 40617080), (4, 20308540), (5, 16246832), (7, 11604880), (8, 10154270), (10, 8123416), (14, 5802440), (16, 5077135), (17, 4778480), (20, 4061708), (23, 3531920), (28, 2901220), (34, 2389240), (35, 2320976), (40, 2030854), (46, 1765960), (49, 1657840), (53, 1532720), (56, 1450610), (68, 1194620), (70, 1160488), (80, 1015427), (85, 955696), (92, 882980), (98, 828920), (106, 766360), (112, 725305), (115, 706384), (119, 682640), (136, 597310), (140, 580244), (161, 504560), (170, 477848), (184, 441490), (196, 414460), (212, 383180), (230, 353192), (238, 341320), (245, 331568), (265, 306544), (272, 298655), (280, 290122), (322, 252280), (340, 238924), (368, 220745), (371, 218960), (391, 207760), (392, 207230), (424, 191590), (460, 176596), (476, 170660), (490, 165784), (530, 153272), (560, 145061), (595, 136528), (644, 126140), (680, 119462), (742, 109480), (782, 103880), (784, 103615), (805, 100912), (833, 97520), (848, 95795), (901, 90160), (920, 88298), (952, 85330), (980, 82892), (1060, 76636), (1127, 72080), (1190, 68264), (1219, 66640), (1288, 63070), (1360, 59731), (1484, 54740), (1564, 51940), (1610, 50456), (1666, 48760), (1802, 45080), (1840, 44149), (1855, 43792), (1904, 42665), (1955, 41552), (1960, 41446), (2120, 38318), (2254, 36040), (2380, 34132), (2438, 33320), (2576, 31535), (2597, 31280), (2737, 29680), (2968, 27370), (3128, 25970), (3220, 25228), (3332, 24380), (3604, 22540), (3710, 21896), (3910, 20776), (3920, 20723), (4165, 19504), (4240, 19159), (4505, 18032), (4508, 18020), (4760, 17066), (4876, 16660), (5194, 15640), (5474, 14840), (5635, 14416), (5936, 13685), (6095, 13328), (6256, 12985), (6307, 12880), (6440, 12614), (6664, 12190), (7208, 11270), (7420, 10948), (7820, 10388), (8330, 9752), (8533, 9520), (9010, 9016)]