81075540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:542

約数の個数: 192

約数和(自身を含む): 289013760

約数和(自身を除く): 207938220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 31, 35, 39, 42, 52, 60, 62, 65, 70, 78, 84, 91, 93, 105, 124, 130, 140, 155, 156, 182, 186, 195, 210, 217, 260, 273, 310, 364, 372, 390, 403, 420, 434, 455, 465, 479, 546, 620, 651, 780, 806, 868, 910, 930, 958, 1085, 1092, 1209, 1302, 1365, 1437, 1612, 1820, 1860, 1916, 2015, 2170, 2395, 2418, 2604, 2730, 2821, 2874, 3255, 3353, 4030, 4340, 4790, 4836, 5460, 5642, 5748, 6045, 6227, 6510, 6706, 7185, 8060, 8463, 9580, 10059, 11284, 12090, 12454, 13020, 13412, 14105, 14370, 14849, 16765, 16926, 18681, 20118, 24180, 24908, 28210, 28740, 29698, 31135, 33530, 33852, 37362, 40236, 42315, 43589, 44547, 50295, 56420, 59396, 62270, 67060, 74245, 74724, 84630, 87178, 89094, 93405, 100590, 103943, 124540, 130767, 148490, 169260, 174356, 178188, 186810, 193037, 201180, 207886, 217945, 222735, 261534, 296980, 311829, 373620, 386074, 415772, 435890, 445470, 519715, 523068, 579111, 623658, 653835, 772148, 871780, 890940, 965185, 1039430, 1158222, 1247316, 1307670, 1351259, 1559145, 1930370, 2078860, 2316444, 2615340, 2702518, 2895555, 3118290, 3860740, 4053777, 5405036, 5791110, 6236580, 6756295, 8107554, 11582220, 13512590, 16215108, 20268885, 27025180, 40537770, 81075540]

約数ペア:

[(1, 81075540), (2, 40537770), (3, 27025180), (4, 20268885), (5, 16215108), (6, 13512590), (7, 11582220), (10, 8107554), (12, 6756295), (13, 6236580), (14, 5791110), (15, 5405036), (20, 4053777), (21, 3860740), (26, 3118290), (28, 2895555), (30, 2702518), (31, 2615340), (35, 2316444), (39, 2078860), (42, 1930370), (52, 1559145), (60, 1351259), (62, 1307670), (65, 1247316), (70, 1158222), (78, 1039430), (84, 965185), (91, 890940), (93, 871780), (105, 772148), (124, 653835), (130, 623658), (140, 579111), (155, 523068), (156, 519715), (182, 445470), (186, 435890), (195, 415772), (210, 386074), (217, 373620), (260, 311829), (273, 296980), (310, 261534), (364, 222735), (372, 217945), (390, 207886), (403, 201180), (420, 193037), (434, 186810), (455, 178188), (465, 174356), (479, 169260), (546, 148490), (620, 130767), (651, 124540), (780, 103943), (806, 100590), (868, 93405), (910, 89094), (930, 87178), (958, 84630), (1085, 74724), (1092, 74245), (1209, 67060), (1302, 62270), (1365, 59396), (1437, 56420), (1612, 50295), (1820, 44547), (1860, 43589), (1916, 42315), (2015, 40236), (2170, 37362), (2395, 33852), (2418, 33530), (2604, 31135), (2730, 29698), (2821, 28740), (2874, 28210), (3255, 24908), (3353, 24180), (4030, 20118), (4340, 18681), (4790, 16926), (4836, 16765), (5460, 14849), (5642, 14370), (5748, 14105), (6045, 13412), (6227, 13020), (6510, 12454), (6706, 12090), (7185, 11284), (8060, 10059), (8463, 9580)]