81456840

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{811}}^1$

素因数の和:865

約数の個数: 160

約数和(自身を含む): 282965760

約数和(自身を除く): 201508920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 81, 90, 93, 108, 120, 124, 135, 155, 162, 180, 186, 216, 248, 270, 279, 310, 324, 360, 372, 405, 465, 540, 558, 620, 648, 744, 810, 811, 837, 930, 1080, 1116, 1240, 1395, 1620, 1622, 1674, 1860, 2232, 2433, 2511, 2790, 3240, 3244, 3348, 3720, 4055, 4185, 4866, 5022, 5580, 6488, 6696, 7299, 8110, 8370, 9732, 10044, 11160, 12165, 12555, 14598, 16220, 16740, 19464, 20088, 21897, 24330, 25110, 25141, 29196, 32440, 33480, 36495, 43794, 48660, 50220, 50282, 58392, 65691, 72990, 75423, 87588, 97320, 100440, 100564, 109485, 125705, 131382, 145980, 150846, 175176, 201128, 218970, 226269, 251410, 262764, 291960, 301692, 328455, 377115, 437940, 452538, 502820, 525528, 603384, 656910, 678807, 754230, 875880, 905076, 1005640, 1131345, 1313820, 1357614, 1508460, 1810152, 2036421, 2262690, 2627640, 2715228, 3016920, 3394035, 4072842, 4525380, 5430456, 6788070, 8145684, 9050760, 10182105, 13576140, 16291368, 20364210, 27152280, 40728420, 81456840]

約数ペア:

[(1, 81456840), (2, 40728420), (3, 27152280), (4, 20364210), (5, 16291368), (6, 13576140), (8, 10182105), (9, 9050760), (10, 8145684), (12, 6788070), (15, 5430456), (18, 4525380), (20, 4072842), (24, 3394035), (27, 3016920), (30, 2715228), (31, 2627640), (36, 2262690), (40, 2036421), (45, 1810152), (54, 1508460), (60, 1357614), (62, 1313820), (72, 1131345), (81, 1005640), (90, 905076), (93, 875880), (108, 754230), (120, 678807), (124, 656910), (135, 603384), (155, 525528), (162, 502820), (180, 452538), (186, 437940), (216, 377115), (248, 328455), (270, 301692), (279, 291960), (310, 262764), (324, 251410), (360, 226269), (372, 218970), (405, 201128), (465, 175176), (540, 150846), (558, 145980), (620, 131382), (648, 125705), (744, 109485), (810, 100564), (811, 100440), (837, 97320), (930, 87588), (1080, 75423), (1116, 72990), (1240, 65691), (1395, 58392), (1620, 50282), (1622, 50220), (1674, 48660), (1860, 43794), (2232, 36495), (2433, 33480), (2511, 32440), (2790, 29196), (3240, 25141), (3244, 25110), (3348, 24330), (3720, 21897), (4055, 20088), (4185, 19464), (4866, 16740), (5022, 16220), (5580, 14598), (6488, 12555), (6696, 12165), (7299, 11160), (8110, 10044), (8370, 9732)]