21496020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:190

約数の個数: 192

約数和(自身を含む): 77070336

約数和(自身を除く): 55574316

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, 127, 130, 140, 155, 156, 182, 186, 195, 210, 217, 254, 260, 273, 310, 364, 372, 381, 390, 403, 420, 434, 455, 465, 508, 546, 620, 635, 651, 762, 780, 806, 868, 889, 910, 930, 1085, 1092, 1209, 1270, 1302, 1365, 1524, 1612, 1651, 1778, 1820, 1860, 1905, 2015, 2170, 2418, 2540, 2604, 2667, 2730, 2821, 3255, 3302, 3556, 3810, 3937, 4030, 4340, 4445, 4836, 4953, 5334, 5460, 5642, 6045, 6510, 6604, 7620, 7874, 8060, 8255, 8463, 8890, 9906, 10668, 11284, 11557, 11811, 12090, 13020, 13335, 14105, 15748, 16510, 16926, 17780, 19685, 19812, 23114, 23622, 24180, 24765, 26670, 27559, 28210, 33020, 33852, 34671, 39370, 42315, 46228, 47244, 49530, 51181, 53340, 55118, 56420, 57785, 59055, 69342, 78740, 82677, 84630, 99060, 102362, 110236, 115570, 118110, 137795, 138684, 153543, 165354, 169260, 173355, 204724, 231140, 236220, 255905, 275590, 307086, 330708, 346710, 358267, 413385, 511810, 551180, 614172, 693420, 716534, 767715, 826770, 1023620, 1074801, 1433068, 1535430, 1653540, 1791335, 2149602, 3070860, 3582670, 4299204, 5374005, 7165340, 10748010, 21496020]

約数ペア:

[(1, 21496020), (2, 10748010), (3, 7165340), (4, 5374005), (5, 4299204), (6, 3582670), (7, 3070860), (10, 2149602), (12, 1791335), (13, 1653540), (14, 1535430), (15, 1433068), (20, 1074801), (21, 1023620), (26, 826770), (28, 767715), (30, 716534), (31, 693420), (35, 614172), (39, 551180), (42, 511810), (52, 413385), (60, 358267), (62, 346710), (65, 330708), (70, 307086), (78, 275590), (84, 255905), (91, 236220), (93, 231140), (105, 204724), (124, 173355), (127, 169260), (130, 165354), (140, 153543), (155, 138684), (156, 137795), (182, 118110), (186, 115570), (195, 110236), (210, 102362), (217, 99060), (254, 84630), (260, 82677), (273, 78740), (310, 69342), (364, 59055), (372, 57785), (381, 56420), (390, 55118), (403, 53340), (420, 51181), (434, 49530), (455, 47244), (465, 46228), (508, 42315), (546, 39370), (620, 34671), (635, 33852), (651, 33020), (762, 28210), (780, 27559), (806, 26670), (868, 24765), (889, 24180), (910, 23622), (930, 23114), (1085, 19812), (1092, 19685), (1209, 17780), (1270, 16926), (1302, 16510), (1365, 15748), (1524, 14105), (1612, 13335), (1651, 13020), (1778, 12090), (1820, 11811), (1860, 11557), (1905, 11284), (2015, 10668), (2170, 9906), (2418, 8890), (2540, 8463), (2604, 8255), (2667, 8060), (2730, 7874), (2821, 7620), (3255, 6604), (3302, 6510), (3556, 6045), (3810, 5642), (3937, 5460), (4030, 5334), (4340, 4953), (4445, 4836)]