81427080

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 256

約数和(自身を含む): 298598400

約数和(自身を除く): 217171320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 53, 56, 59, 60, 62, 70, 84, 93, 105, 106, 118, 120, 124, 140, 155, 159, 168, 177, 186, 210, 212, 217, 236, 248, 265, 280, 295, 310, 318, 354, 371, 372, 413, 420, 424, 434, 465, 472, 530, 590, 620, 636, 651, 708, 742, 744, 795, 826, 840, 868, 885, 930, 1060, 1085, 1113, 1180, 1239, 1240, 1272, 1302, 1416, 1484, 1590, 1643, 1652, 1736, 1770, 1829, 1855, 1860, 2065, 2120, 2170, 2226, 2360, 2478, 2604, 2968, 3127, 3180, 3255, 3286, 3304, 3540, 3658, 3710, 3720, 4130, 4340, 4452, 4929, 4956, 5208, 5487, 5565, 6195, 6254, 6360, 6510, 6572, 7080, 7316, 7420, 8215, 8260, 8680, 8904, 9145, 9381, 9858, 9912, 10974, 11130, 11501, 12390, 12508, 12803, 13020, 13144, 14632, 14840, 15635, 16430, 16520, 18290, 18762, 19716, 21889, 21948, 22260, 23002, 24645, 24780, 25016, 25606, 26040, 27435, 31270, 32860, 34503, 36580, 37524, 38409, 39432, 43778, 43896, 44520, 46004, 46905, 49290, 49560, 51212, 54870, 57505, 62540, 64015, 65667, 65720, 69006, 73160, 75048, 76818, 87556, 92008, 93810, 96937, 98580, 102424, 109445, 109740, 115010, 125080, 128030, 131334, 138012, 153636, 172515, 175112, 187620, 192045, 193874, 197160, 218890, 219480, 230020, 256060, 262668, 276024, 290811, 307272, 328335, 345030, 375240, 384090, 387748, 437780, 460040, 484685, 512120, 525336, 581622, 656670, 678559, 690060, 768180, 775496, 875560, 969370, 1163244, 1313340, 1357118, 1380120, 1454055, 1536360, 1938740, 2035677, 2326488, 2626680, 2714236, 2908110, 3392795, 3877480, 4071354, 5428472, 5816220, 6785590, 8142708, 10178385, 11632440, 13571180, 16285416, 20356770, 27142360, 40713540, 81427080]

約数ペア:

[(1, 81427080), (2, 40713540), (3, 27142360), (4, 20356770), (5, 16285416), (6, 13571180), (7, 11632440), (8, 10178385), (10, 8142708), (12, 6785590), (14, 5816220), (15, 5428472), (20, 4071354), (21, 3877480), (24, 3392795), (28, 2908110), (30, 2714236), (31, 2626680), (35, 2326488), (40, 2035677), (42, 1938740), (53, 1536360), (56, 1454055), (59, 1380120), (60, 1357118), (62, 1313340), (70, 1163244), (84, 969370), (93, 875560), (105, 775496), (106, 768180), (118, 690060), (120, 678559), (124, 656670), (140, 581622), (155, 525336), (159, 512120), (168, 484685), (177, 460040), (186, 437780), (210, 387748), (212, 384090), (217, 375240), (236, 345030), (248, 328335), (265, 307272), (280, 290811), (295, 276024), (310, 262668), (318, 256060), (354, 230020), (371, 219480), (372, 218890), (413, 197160), (420, 193874), (424, 192045), (434, 187620), (465, 175112), (472, 172515), (530, 153636), (590, 138012), (620, 131334), (636, 128030), (651, 125080), (708, 115010), (742, 109740), (744, 109445), (795, 102424), (826, 98580), (840, 96937), (868, 93810), (885, 92008), (930, 87556), (1060, 76818), (1085, 75048), (1113, 73160), (1180, 69006), (1239, 65720), (1240, 65667), (1272, 64015), (1302, 62540), (1416, 57505), (1484, 54870), (1590, 51212), (1643, 49560), (1652, 49290), (1736, 46905), (1770, 46004), (1829, 44520), (1855, 43896), (1860, 43778), (2065, 39432), (2120, 38409), (2170, 37524), (2226, 36580), (2360, 34503), (2478, 32860), (2604, 31270), (2968, 27435), (3127, 26040), (3180, 25606), (3255, 25016), (3286, 24780), (3304, 24645), (3540, 23002), (3658, 22260), (3710, 21948), (3720, 21889), (4130, 19716), (4340, 18762), (4452, 18290), (4929, 16520), (4956, 16430), (5208, 15635), (5487, 14840), (5565, 14632), (6195, 13144), (6254, 13020), (6360, 12803), (6510, 12508), (6572, 12390), (7080, 11501), (7316, 11130), (7420, 10974), (8215, 9912), (8260, 9858), (8680, 9381), (8904, 9145)]