1978617780

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:649

約数の個数: 288

約数和(自身を含む): 6715957248

約数和(自身を除く): 4737339468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 31, 36, 45, 46, 54, 60, 62, 69, 81, 90, 92, 93, 108, 115, 124, 135, 138, 155, 162, 180, 186, 207, 230, 243, 270, 276, 279, 310, 324, 345, 372, 405, 414, 460, 465, 486, 540, 558, 571, 620, 621, 690, 713, 810, 828, 837, 930, 972, 1035, 1116, 1142, 1215, 1242, 1380, 1395, 1426, 1620, 1674, 1713, 1860, 1863, 2070, 2139, 2284, 2430, 2484, 2511, 2790, 2852, 2855, 3105, 3348, 3426, 3565, 3726, 4140, 4185, 4278, 4860, 5022, 5139, 5580, 5589, 5710, 6210, 6417, 6852, 7130, 7452, 7533, 8370, 8556, 8565, 9315, 10044, 10278, 10695, 11178, 11420, 12420, 12555, 12834, 13133, 14260, 15066, 15417, 16740, 17130, 17701, 18630, 19251, 20556, 21390, 22356, 25110, 25668, 25695, 26266, 27945, 30132, 30834, 32085, 34260, 35402, 37260, 37665, 38502, 39399, 42780, 46251, 50220, 51390, 52532, 53103, 55890, 57753, 61668, 64170, 65665, 70804, 75330, 77004, 77085, 78798, 88505, 92502, 96255, 102780, 106206, 111780, 115506, 118197, 128340, 131330, 138753, 150660, 154170, 157596, 159309, 173259, 177010, 185004, 192510, 196995, 212412, 231012, 231255, 236394, 262660, 265515, 277506, 288765, 308340, 318618, 346518, 354020, 354591, 385020, 393990, 407123, 462510, 472788, 477927, 531030, 555012, 577530, 590985, 637236, 693036, 693765, 709182, 787980, 796545, 814246, 866295, 925020, 955854, 1062060, 1063773, 1155060, 1181970, 1221369, 1387530, 1418364, 1433781, 1593090, 1628492, 1732590, 1772955, 1911708, 2035615, 2127546, 2363940, 2389635, 2442738, 2775060, 2867562, 3186180, 3191319, 3465180, 3545910, 3664107, 4071230, 4255092, 4301343, 4779270, 4885476, 5318865, 5735124, 6106845, 6382638, 7091820, 7168905, 7328214, 8142460, 8602686, 9558540, 10637730, 10992321, 12213690, 12765276, 14337810, 14656428, 15956595, 17205372, 18320535, 21275460, 21506715, 21984642, 24427380, 28675620, 31913190, 32976963, 36641070, 43013430, 43969284, 54961605, 63826380, 65953926, 73282140, 86026860, 98930889, 109923210, 131907852, 164884815, 197861778, 219846420, 329769630, 395723556, 494654445, 659539260, 989308890, 1978617780]

約数ペア:

[(1, 1978617780), (2, 989308890), (3, 659539260), (4, 494654445), (5, 395723556), (6, 329769630), (9, 219846420), (10, 197861778), (12, 164884815), (15, 131907852), (18, 109923210), (20, 98930889), (23, 86026860), (27, 73282140), (30, 65953926), (31, 63826380), (36, 54961605), (45, 43969284), (46, 43013430), (54, 36641070), (60, 32976963), (62, 31913190), (69, 28675620), (81, 24427380), (90, 21984642), (92, 21506715), (93, 21275460), (108, 18320535), (115, 17205372), (124, 15956595), (135, 14656428), (138, 14337810), (155, 12765276), (162, 12213690), (180, 10992321), (186, 10637730), (207, 9558540), (230, 8602686), (243, 8142460), (270, 7328214), (276, 7168905), (279, 7091820), (310, 6382638), (324, 6106845), (345, 5735124), (372, 5318865), (405, 4885476), (414, 4779270), (460, 4301343), (465, 4255092), (486, 4071230), (540, 3664107), (558, 3545910), (571, 3465180), (620, 3191319), (621, 3186180), (690, 2867562), (713, 2775060), (810, 2442738), (828, 2389635), (837, 2363940), (930, 2127546), (972, 2035615), (1035, 1911708), (1116, 1772955), (1142, 1732590), (1215, 1628492), (1242, 1593090), (1380, 1433781), (1395, 1418364), (1426, 1387530), (1620, 1221369), (1674, 1181970), (1713, 1155060), (1860, 1063773), (1863, 1062060), (2070, 955854), (2139, 925020), (2284, 866295), (2430, 814246), (2484, 796545), (2511, 787980), (2790, 709182), (2852, 693765), (2855, 693036), (3105, 637236), (3348, 590985), (3426, 577530), (3565, 555012), (3726, 531030), (4140, 477927), (4185, 472788), (4278, 462510), (4860, 407123), (5022, 393990), (5139, 385020), (5580, 354591), (5589, 354020), (5710, 346518), (6210, 318618), (6417, 308340), (6852, 288765), (7130, 277506), (7452, 265515), (7533, 262660), (8370, 236394), (8556, 231255), (8565, 231012), (9315, 212412), (10044, 196995), (10278, 192510), (10695, 185004), (11178, 177010), (11420, 173259), (12420, 159309), (12555, 157596), (12834, 154170), (13133, 150660), (14260, 138753), (15066, 131330), (15417, 128340), (16740, 118197), (17130, 115506), (17701, 111780), (18630, 106206), (19251, 102780), (20556, 96255), (21390, 92502), (22356, 88505), (25110, 78798), (25668, 77085), (25695, 77004), (26266, 75330), (27945, 70804), (30132, 65665), (30834, 64170), (32085, 61668), (34260, 57753), (35402, 55890), (37260, 53103), (37665, 52532), (38502, 51390), (39399, 50220), (42780, 46251)]