81127620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 216

約数和(自身を含む): 294944832

約数和(自身を除く): 213817212

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 67, 70, 84, 90, 93, 105, 124, 126, 134, 140, 155, 180, 186, 201, 210, 217, 252, 268, 279, 310, 315, 335, 372, 402, 420, 434, 465, 469, 558, 603, 620, 630, 651, 670, 804, 868, 930, 938, 961, 1005, 1085, 1116, 1206, 1260, 1302, 1340, 1395, 1407, 1860, 1876, 1922, 1953, 2010, 2077, 2170, 2345, 2412, 2604, 2790, 2814, 2883, 3015, 3255, 3844, 3906, 4020, 4154, 4221, 4340, 4690, 4805, 5580, 5628, 5766, 6030, 6231, 6510, 6727, 7035, 7812, 8308, 8442, 8649, 9380, 9610, 9765, 10385, 11532, 12060, 12462, 13020, 13454, 14070, 14415, 14539, 16884, 17298, 18693, 19220, 19530, 20181, 20770, 21105, 24924, 26908, 28140, 28830, 29078, 31155, 33635, 34596, 37386, 39060, 40362, 41540, 42210, 43245, 43617, 57660, 58156, 60543, 62310, 64387, 67270, 72695, 74772, 80724, 84420, 86490, 87234, 93465, 100905, 121086, 124620, 128774, 130851, 134540, 145390, 172980, 174468, 186930, 193161, 201810, 218085, 242172, 257548, 261702, 290780, 302715, 321935, 373860, 386322, 403620, 436170, 450709, 523404, 579483, 605430, 643870, 654255, 772644, 872340, 901418, 965805, 1158966, 1210860, 1287740, 1308510, 1352127, 1802836, 1931610, 2253545, 2317932, 2617020, 2704254, 2897415, 3863220, 4056381, 4507090, 5408508, 5794830, 6760635, 8112762, 9014180, 11589660, 13521270, 16225524, 20281905, 27042540, 40563810, 81127620]

約数ペア:

[(1, 81127620), (2, 40563810), (3, 27042540), (4, 20281905), (5, 16225524), (6, 13521270), (7, 11589660), (9, 9014180), (10, 8112762), (12, 6760635), (14, 5794830), (15, 5408508), (18, 4507090), (20, 4056381), (21, 3863220), (28, 2897415), (30, 2704254), (31, 2617020), (35, 2317932), (36, 2253545), (42, 1931610), (45, 1802836), (60, 1352127), (62, 1308510), (63, 1287740), (67, 1210860), (70, 1158966), (84, 965805), (90, 901418), (93, 872340), (105, 772644), (124, 654255), (126, 643870), (134, 605430), (140, 579483), (155, 523404), (180, 450709), (186, 436170), (201, 403620), (210, 386322), (217, 373860), (252, 321935), (268, 302715), (279, 290780), (310, 261702), (315, 257548), (335, 242172), (372, 218085), (402, 201810), (420, 193161), (434, 186930), (465, 174468), (469, 172980), (558, 145390), (603, 134540), (620, 130851), (630, 128774), (651, 124620), (670, 121086), (804, 100905), (868, 93465), (930, 87234), (938, 86490), (961, 84420), (1005, 80724), (1085, 74772), (1116, 72695), (1206, 67270), (1260, 64387), (1302, 62310), (1340, 60543), (1395, 58156), (1407, 57660), (1860, 43617), (1876, 43245), (1922, 42210), (1953, 41540), (2010, 40362), (2077, 39060), (2170, 37386), (2345, 34596), (2412, 33635), (2604, 31155), (2790, 29078), (2814, 28830), (2883, 28140), (3015, 26908), (3255, 24924), (3844, 21105), (3906, 20770), (4020, 20181), (4154, 19530), (4221, 19220), (4340, 18693), (4690, 17298), (4805, 16884), (5580, 14539), (5628, 14415), (5766, 14070), (6030, 13454), (6231, 13020), (6510, 12462), (6727, 12060), (7035, 11532), (7812, 10385), (8308, 9765), (8442, 9610), (8649, 9380)]