255418380

素因数分解:

$2^2\times 3^3\times 5^1\times 7^4\times {\mathrm{197}}^1$

素因数の和:243

約数の個数: 240

約数和(自身を含む): 931724640

約数和(自身を除く): 676306260

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 197, 210, 245, 252, 270, 294, 315, 343, 378, 394, 420, 441, 490, 540, 588, 591, 630, 686, 735, 756, 788, 882, 945, 980, 985, 1029, 1182, 1260, 1323, 1372, 1379, 1470, 1715, 1764, 1773, 1890, 1970, 2058, 2205, 2364, 2401, 2646, 2758, 2940, 2955, 3087, 3430, 3546, 3780, 3940, 4116, 4137, 4410, 4802, 5145, 5292, 5319, 5516, 5910, 6174, 6615, 6860, 6895, 7092, 7203, 8274, 8820, 8865, 9261, 9604, 9653, 10290, 10638, 11820, 12005, 12348, 12411, 13230, 13790, 14406, 15435, 16548, 17730, 18522, 19306, 20580, 20685, 21276, 21609, 24010, 24822, 26460, 26595, 27580, 28812, 28959, 30870, 35460, 36015, 37044, 37233, 38612, 41370, 43218, 46305, 48020, 48265, 49644, 53190, 57918, 61740, 62055, 64827, 67571, 72030, 74466, 82740, 86436, 86877, 92610, 96530, 106380, 108045, 115836, 124110, 129654, 135142, 144060, 144795, 148932, 173754, 185220, 186165, 193060, 202713, 216090, 248220, 259308, 260631, 270284, 289590, 324135, 337855, 347508, 372330, 405426, 432180, 434385, 472997, 521262, 579180, 608139, 648270, 675710, 744660, 810852, 868770, 945994, 1013565, 1042524, 1216278, 1296540, 1303155, 1351420, 1418991, 1737540, 1824417, 1891988, 2027130, 2364985, 2432556, 2606310, 2837982, 3040695, 3648834, 4054260, 4256973, 4729970, 5212620, 5675964, 6081390, 7094955, 7297668, 8513946, 9122085, 9459940, 12162780, 12770919, 14189910, 17027892, 18244170, 21284865, 25541838, 28379820, 36488340, 42569730, 51083676, 63854595, 85139460, 127709190, 255418380]

約数ペア:

[(1, 255418380), (2, 127709190), (3, 85139460), (4, 63854595), (5, 51083676), (6, 42569730), (7, 36488340), (9, 28379820), (10, 25541838), (12, 21284865), (14, 18244170), (15, 17027892), (18, 14189910), (20, 12770919), (21, 12162780), (27, 9459940), (28, 9122085), (30, 8513946), (35, 7297668), (36, 7094955), (42, 6081390), (45, 5675964), (49, 5212620), (54, 4729970), (60, 4256973), (63, 4054260), (70, 3648834), (84, 3040695), (90, 2837982), (98, 2606310), (105, 2432556), (108, 2364985), (126, 2027130), (135, 1891988), (140, 1824417), (147, 1737540), (180, 1418991), (189, 1351420), (196, 1303155), (197, 1296540), (210, 1216278), (245, 1042524), (252, 1013565), (270, 945994), (294, 868770), (315, 810852), (343, 744660), (378, 675710), (394, 648270), (420, 608139), (441, 579180), (490, 521262), (540, 472997), (588, 434385), (591, 432180), (630, 405426), (686, 372330), (735, 347508), (756, 337855), (788, 324135), (882, 289590), (945, 270284), (980, 260631), (985, 259308), (1029, 248220), (1182, 216090), (1260, 202713), (1323, 193060), (1372, 186165), (1379, 185220), (1470, 173754), (1715, 148932), (1764, 144795), (1773, 144060), (1890, 135142), (1970, 129654), (2058, 124110), (2205, 115836), (2364, 108045), (2401, 106380), (2646, 96530), (2758, 92610), (2940, 86877), (2955, 86436), (3087, 82740), (3430, 74466), (3546, 72030), (3780, 67571), (3940, 64827), (4116, 62055), (4137, 61740), (4410, 57918), (4802, 53190), (5145, 49644), (5292, 48265), (5319, 48020), (5516, 46305), (5910, 43218), (6174, 41370), (6615, 38612), (6860, 37233), (6895, 37044), (7092, 36015), (7203, 35460), (8274, 30870), (8820, 28959), (8865, 28812), (9261, 27580), (9604, 26595), (9653, 26460), (10290, 24822), (10638, 24010), (11820, 21609), (12005, 21276), (12348, 20685), (12411, 20580), (13230, 19306), (13790, 18522), (14406, 17730), (15435, 16548)]