81139680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{29}}^2\times {\mathrm{67}}^1$

素因数の和:146

約数の個数: 216

約数和(自身を含む): 291046392

約数和(自身を除く): 209906712

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 67, 72, 80, 87, 90, 96, 116, 120, 134, 144, 145, 160, 174, 180, 201, 232, 240, 261, 268, 288, 290, 335, 348, 360, 402, 435, 464, 480, 522, 536, 580, 603, 670, 696, 720, 804, 841, 870, 928, 1005, 1044, 1072, 1160, 1206, 1305, 1340, 1392, 1440, 1608, 1682, 1740, 1943, 2010, 2088, 2144, 2320, 2412, 2523, 2610, 2680, 2784, 3015, 3216, 3364, 3480, 3886, 4020, 4176, 4205, 4640, 4824, 5046, 5220, 5360, 5829, 6030, 6432, 6728, 6960, 7569, 7772, 8040, 8352, 8410, 9648, 9715, 10092, 10440, 10720, 11658, 12060, 12615, 13456, 13920, 15138, 15544, 16080, 16820, 17487, 19296, 19430, 20184, 20880, 23316, 24120, 25230, 26912, 29145, 30276, 31088, 32160, 33640, 34974, 37845, 38860, 40368, 41760, 46632, 48240, 50460, 56347, 58290, 60552, 62176, 67280, 69948, 75690, 77720, 80736, 87435, 93264, 96480, 100920, 112694, 116580, 121104, 134560, 139896, 151380, 155440, 169041, 174870, 186528, 201840, 225388, 233160, 242208, 279792, 281735, 302760, 310880, 338082, 349740, 403680, 450776, 466320, 507123, 559584, 563470, 605520, 676164, 699480, 845205, 901552, 932640, 1014246, 1126940, 1211040, 1352328, 1398960, 1690410, 1803104, 2028492, 2253880, 2535615, 2704656, 2797920, 3380820, 4056984, 4507760, 5071230, 5409312, 6761640, 8113968, 9015520, 10142460, 13523280, 16227936, 20284920, 27046560, 40569840, 81139680]

約数ペア:

[(1, 81139680), (2, 40569840), (3, 27046560), (4, 20284920), (5, 16227936), (6, 13523280), (8, 10142460), (9, 9015520), (10, 8113968), (12, 6761640), (15, 5409312), (16, 5071230), (18, 4507760), (20, 4056984), (24, 3380820), (29, 2797920), (30, 2704656), (32, 2535615), (36, 2253880), (40, 2028492), (45, 1803104), (48, 1690410), (58, 1398960), (60, 1352328), (67, 1211040), (72, 1126940), (80, 1014246), (87, 932640), (90, 901552), (96, 845205), (116, 699480), (120, 676164), (134, 605520), (144, 563470), (145, 559584), (160, 507123), (174, 466320), (180, 450776), (201, 403680), (232, 349740), (240, 338082), (261, 310880), (268, 302760), (288, 281735), (290, 279792), (335, 242208), (348, 233160), (360, 225388), (402, 201840), (435, 186528), (464, 174870), (480, 169041), (522, 155440), (536, 151380), (580, 139896), (603, 134560), (670, 121104), (696, 116580), (720, 112694), (804, 100920), (841, 96480), (870, 93264), (928, 87435), (1005, 80736), (1044, 77720), (1072, 75690), (1160, 69948), (1206, 67280), (1305, 62176), (1340, 60552), (1392, 58290), (1440, 56347), (1608, 50460), (1682, 48240), (1740, 46632), (1943, 41760), (2010, 40368), (2088, 38860), (2144, 37845), (2320, 34974), (2412, 33640), (2523, 32160), (2610, 31088), (2680, 30276), (2784, 29145), (3015, 26912), (3216, 25230), (3364, 24120), (3480, 23316), (3886, 20880), (4020, 20184), (4176, 19430), (4205, 19296), (4640, 17487), (4824, 16820), (5046, 16080), (5220, 15544), (5360, 15138), (5829, 13920), (6030, 13456), (6432, 12615), (6728, 12060), (6960, 11658), (7569, 10720), (7772, 10440), (8040, 10092), (8352, 9715), (8410, 9648)]