81720900

素因数分解:

$2^2\times 3^6\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:110

約数の個数: 252

約数和(自身を含む): 284617200

約数和(自身を除く): 202896300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 25, 27, 30, 36, 38, 45, 50, 54, 57, 59, 60, 75, 76, 81, 90, 95, 100, 108, 114, 118, 135, 150, 162, 171, 177, 180, 190, 225, 228, 236, 243, 270, 285, 295, 300, 324, 342, 354, 380, 405, 450, 475, 486, 513, 531, 540, 570, 590, 675, 684, 708, 729, 810, 855, 885, 900, 950, 972, 1026, 1062, 1121, 1140, 1180, 1215, 1350, 1425, 1458, 1475, 1539, 1593, 1620, 1710, 1770, 1900, 2025, 2052, 2124, 2242, 2430, 2565, 2655, 2700, 2850, 2916, 2950, 3078, 3186, 3363, 3420, 3540, 3645, 4050, 4275, 4425, 4484, 4617, 4779, 4860, 5130, 5310, 5605, 5700, 5900, 6075, 6156, 6372, 6726, 7290, 7695, 7965, 8100, 8550, 8850, 9234, 9558, 10089, 10260, 10620, 11210, 12150, 12825, 13275, 13452, 13851, 14337, 14580, 15390, 15930, 16815, 17100, 17700, 18225, 18468, 19116, 20178, 22420, 23085, 23895, 24300, 25650, 26550, 27702, 28025, 28674, 30267, 30780, 31860, 33630, 36450, 38475, 39825, 40356, 43011, 46170, 47790, 50445, 51300, 53100, 55404, 56050, 57348, 60534, 67260, 69255, 71685, 72900, 76950, 79650, 84075, 86022, 90801, 92340, 95580, 100890, 112100, 115425, 119475, 121068, 138510, 143370, 151335, 153900, 159300, 168150, 172044, 181602, 201780, 215055, 230850, 238950, 252225, 272403, 277020, 286740, 302670, 336300, 346275, 358425, 363204, 430110, 454005, 461700, 477900, 504450, 544806, 605340, 692550, 716850, 756675, 817209, 860220, 908010, 1008900, 1075275, 1089612, 1362015, 1385100, 1433700, 1513350, 1634418, 1816020, 2150550, 2270025, 2724030, 3026700, 3268836, 4086045, 4301100, 4540050, 5448060, 6810075, 8172090, 9080100, 13620150, 16344180, 20430225, 27240300, 40860450, 81720900]

約数ペア:

[(1, 81720900), (2, 40860450), (3, 27240300), (4, 20430225), (5, 16344180), (6, 13620150), (9, 9080100), (10, 8172090), (12, 6810075), (15, 5448060), (18, 4540050), (19, 4301100), (20, 4086045), (25, 3268836), (27, 3026700), (30, 2724030), (36, 2270025), (38, 2150550), (45, 1816020), (50, 1634418), (54, 1513350), (57, 1433700), (59, 1385100), (60, 1362015), (75, 1089612), (76, 1075275), (81, 1008900), (90, 908010), (95, 860220), (100, 817209), (108, 756675), (114, 716850), (118, 692550), (135, 605340), (150, 544806), (162, 504450), (171, 477900), (177, 461700), (180, 454005), (190, 430110), (225, 363204), (228, 358425), (236, 346275), (243, 336300), (270, 302670), (285, 286740), (295, 277020), (300, 272403), (324, 252225), (342, 238950), (354, 230850), (380, 215055), (405, 201780), (450, 181602), (475, 172044), (486, 168150), (513, 159300), (531, 153900), (540, 151335), (570, 143370), (590, 138510), (675, 121068), (684, 119475), (708, 115425), (729, 112100), (810, 100890), (855, 95580), (885, 92340), (900, 90801), (950, 86022), (972, 84075), (1026, 79650), (1062, 76950), (1121, 72900), (1140, 71685), (1180, 69255), (1215, 67260), (1350, 60534), (1425, 57348), (1458, 56050), (1475, 55404), (1539, 53100), (1593, 51300), (1620, 50445), (1710, 47790), (1770, 46170), (1900, 43011), (2025, 40356), (2052, 39825), (2124, 38475), (2242, 36450), (2430, 33630), (2565, 31860), (2655, 30780), (2700, 30267), (2850, 28674), (2916, 28025), (2950, 27702), (3078, 26550), (3186, 25650), (3363, 24300), (3420, 23895), (3540, 23085), (3645, 22420), (4050, 20178), (4275, 19116), (4425, 18468), (4484, 18225), (4617, 17700), (4779, 17100), (4860, 16815), (5130, 15930), (5310, 15390), (5605, 14580), (5700, 14337), (5900, 13851), (6075, 13452), (6156, 13275), (6372, 12825), (6726, 12150), (7290, 11210), (7695, 10620), (7965, 10260), (8100, 10089), (8550, 9558), (8850, 9234)]