20037780

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 288

約数和(自身を含む): 78274560

約数和(自身を除く): 58236780

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 31, 35, 36, 38, 42, 45, 54, 57, 60, 62, 63, 70, 76, 81, 84, 90, 93, 95, 105, 108, 114, 124, 126, 133, 135, 140, 155, 162, 171, 180, 186, 189, 190, 210, 217, 228, 243, 252, 266, 270, 279, 285, 310, 315, 324, 342, 372, 378, 380, 399, 405, 420, 434, 465, 486, 513, 532, 540, 558, 567, 570, 589, 620, 630, 651, 665, 684, 756, 798, 810, 837, 855, 868, 930, 945, 972, 1026, 1085, 1116, 1134, 1140, 1178, 1197, 1215, 1260, 1302, 1330, 1395, 1539, 1596, 1620, 1674, 1701, 1710, 1767, 1860, 1890, 1953, 1995, 2052, 2170, 2268, 2356, 2394, 2430, 2511, 2565, 2604, 2660, 2790, 2835, 2945, 3078, 3255, 3348, 3402, 3420, 3534, 3591, 3780, 3906, 3990, 4123, 4185, 4340, 4617, 4788, 4860, 5022, 5130, 5301, 5580, 5670, 5859, 5890, 5985, 6156, 6510, 6804, 7068, 7182, 7533, 7695, 7812, 7980, 8246, 8370, 8505, 8835, 9234, 9765, 10044, 10260, 10602, 10773, 11340, 11718, 11780, 11970, 12369, 12555, 13020, 14364, 15066, 15390, 15903, 16492, 16740, 17010, 17577, 17670, 17955, 18468, 19530, 20615, 21204, 21546, 23085, 23436, 23940, 24738, 25110, 26505, 29295, 30132, 30780, 31806, 32319, 34020, 35154, 35340, 35910, 37107, 37665, 39060, 41230, 43092, 46170, 47709, 49476, 50220, 52731, 53010, 53865, 58590, 61845, 63612, 64638, 70308, 71820, 74214, 75330, 79515, 82460, 87885, 92340, 95418, 105462, 106020, 107730, 111321, 117180, 123690, 129276, 143127, 148428, 150660, 159030, 161595, 175770, 185535, 190836, 210924, 215460, 222642, 238545, 247380, 263655, 286254, 318060, 323190, 333963, 351540, 371070, 445284, 477090, 527310, 556605, 572508, 646380, 667926, 715635, 742140, 954180, 1001889, 1054620, 1113210, 1335852, 1431270, 1669815, 2003778, 2226420, 2862540, 3339630, 4007556, 5009445, 6679260, 10018890, 20037780]

約数ペア:

[(1, 20037780), (2, 10018890), (3, 6679260), (4, 5009445), (5, 4007556), (6, 3339630), (7, 2862540), (9, 2226420), (10, 2003778), (12, 1669815), (14, 1431270), (15, 1335852), (18, 1113210), (19, 1054620), (20, 1001889), (21, 954180), (27, 742140), (28, 715635), (30, 667926), (31, 646380), (35, 572508), (36, 556605), (38, 527310), (42, 477090), (45, 445284), (54, 371070), (57, 351540), (60, 333963), (62, 323190), (63, 318060), (70, 286254), (76, 263655), (81, 247380), (84, 238545), (90, 222642), (93, 215460), (95, 210924), (105, 190836), (108, 185535), (114, 175770), (124, 161595), (126, 159030), (133, 150660), (135, 148428), (140, 143127), (155, 129276), (162, 123690), (171, 117180), (180, 111321), (186, 107730), (189, 106020), (190, 105462), (210, 95418), (217, 92340), (228, 87885), (243, 82460), (252, 79515), (266, 75330), (270, 74214), (279, 71820), (285, 70308), (310, 64638), (315, 63612), (324, 61845), (342, 58590), (372, 53865), (378, 53010), (380, 52731), (399, 50220), (405, 49476), (420, 47709), (434, 46170), (465, 43092), (486, 41230), (513, 39060), (532, 37665), (540, 37107), (558, 35910), (567, 35340), (570, 35154), (589, 34020), (620, 32319), (630, 31806), (651, 30780), (665, 30132), (684, 29295), (756, 26505), (798, 25110), (810, 24738), (837, 23940), (855, 23436), (868, 23085), (930, 21546), (945, 21204), (972, 20615), (1026, 19530), (1085, 18468), (1116, 17955), (1134, 17670), (1140, 17577), (1178, 17010), (1197, 16740), (1215, 16492), (1260, 15903), (1302, 15390), (1330, 15066), (1395, 14364), (1539, 13020), (1596, 12555), (1620, 12369), (1674, 11970), (1701, 11780), (1710, 11718), (1767, 11340), (1860, 10773), (1890, 10602), (1953, 10260), (1995, 10044), (2052, 9765), (2170, 9234), (2268, 8835), (2356, 8505), (2394, 8370), (2430, 8246), (2511, 7980), (2565, 7812), (2604, 7695), (2660, 7533), (2790, 7182), (2835, 7068), (2945, 6804), (3078, 6510), (3255, 6156), (3348, 5985), (3402, 5890), (3420, 5859), (3534, 5670), (3591, 5580), (3780, 5301), (3906, 5130), (3990, 5022), (4123, 4860), (4185, 4788), (4340, 4617)]