18781560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:310

約数の個数: 192

約数和(自身を含む): 72446400

約数和(自身を除く): 53664840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 29, 30, 35, 36, 40, 42, 45, 56, 58, 60, 63, 70, 72, 84, 87, 90, 105, 116, 120, 126, 140, 145, 168, 174, 180, 203, 210, 232, 252, 257, 261, 280, 290, 315, 348, 360, 406, 420, 435, 504, 514, 522, 580, 609, 630, 696, 771, 812, 840, 870, 1015, 1028, 1044, 1160, 1218, 1260, 1285, 1305, 1542, 1624, 1740, 1799, 1827, 2030, 2056, 2088, 2313, 2436, 2520, 2570, 2610, 3045, 3084, 3480, 3598, 3654, 3855, 4060, 4626, 4872, 5140, 5220, 5397, 6090, 6168, 7196, 7308, 7453, 7710, 8120, 8995, 9135, 9252, 10280, 10440, 10794, 11565, 12180, 14392, 14616, 14906, 15420, 16191, 17990, 18270, 18504, 21588, 22359, 23130, 24360, 26985, 29812, 30840, 32382, 35980, 36540, 37265, 43176, 44718, 46260, 52171, 53970, 59624, 64764, 67077, 71960, 73080, 74530, 80955, 89436, 92520, 104342, 107940, 111795, 129528, 134154, 149060, 156513, 161910, 178872, 208684, 215880, 223590, 260855, 268308, 298120, 313026, 323820, 335385, 417368, 447180, 469539, 521710, 536616, 626052, 647640, 670770, 782565, 894360, 939078, 1043420, 1252104, 1341540, 1565130, 1878156, 2086840, 2347695, 2683080, 3130260, 3756312, 4695390, 6260520, 9390780, 18781560]

約数ペア:

[(1, 18781560), (2, 9390780), (3, 6260520), (4, 4695390), (5, 3756312), (6, 3130260), (7, 2683080), (8, 2347695), (9, 2086840), (10, 1878156), (12, 1565130), (14, 1341540), (15, 1252104), (18, 1043420), (20, 939078), (21, 894360), (24, 782565), (28, 670770), (29, 647640), (30, 626052), (35, 536616), (36, 521710), (40, 469539), (42, 447180), (45, 417368), (56, 335385), (58, 323820), (60, 313026), (63, 298120), (70, 268308), (72, 260855), (84, 223590), (87, 215880), (90, 208684), (105, 178872), (116, 161910), (120, 156513), (126, 149060), (140, 134154), (145, 129528), (168, 111795), (174, 107940), (180, 104342), (203, 92520), (210, 89436), (232, 80955), (252, 74530), (257, 73080), (261, 71960), (280, 67077), (290, 64764), (315, 59624), (348, 53970), (360, 52171), (406, 46260), (420, 44718), (435, 43176), (504, 37265), (514, 36540), (522, 35980), (580, 32382), (609, 30840), (630, 29812), (696, 26985), (771, 24360), (812, 23130), (840, 22359), (870, 21588), (1015, 18504), (1028, 18270), (1044, 17990), (1160, 16191), (1218, 15420), (1260, 14906), (1285, 14616), (1305, 14392), (1542, 12180), (1624, 11565), (1740, 10794), (1799, 10440), (1827, 10280), (2030, 9252), (2056, 9135), (2088, 8995), (2313, 8120), (2436, 7710), (2520, 7453), (2570, 7308), (2610, 7196), (3045, 6168), (3084, 6090), (3480, 5397), (3598, 5220), (3654, 5140), (3855, 4872), (4060, 4626)]