18865980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 288

約数和(自身を含む): 73543680

約数和(自身を除く): 54677700

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 31, 35, 36, 42, 45, 46, 49, 54, 60, 62, 63, 69, 70, 84, 90, 92, 93, 98, 105, 108, 115, 124, 126, 135, 138, 140, 147, 155, 161, 180, 186, 189, 196, 207, 210, 217, 230, 245, 252, 270, 276, 279, 294, 310, 315, 322, 345, 372, 378, 414, 420, 434, 441, 460, 465, 483, 490, 540, 558, 588, 620, 621, 630, 644, 651, 690, 713, 735, 756, 805, 828, 837, 868, 882, 930, 945, 966, 980, 1035, 1085, 1116, 1127, 1242, 1260, 1302, 1323, 1380, 1395, 1426, 1449, 1470, 1519, 1610, 1674, 1764, 1860, 1890, 1932, 1953, 2070, 2139, 2170, 2205, 2254, 2415, 2484, 2604, 2646, 2790, 2852, 2898, 2940, 3038, 3105, 3220, 3255, 3348, 3381, 3565, 3780, 3906, 4140, 4185, 4278, 4340, 4347, 4410, 4508, 4557, 4830, 4991, 5292, 5580, 5635, 5796, 5859, 6076, 6210, 6417, 6510, 6615, 6762, 7130, 7245, 7595, 7812, 8370, 8556, 8694, 8820, 9114, 9660, 9765, 9982, 10143, 10695, 11270, 11718, 12420, 12834, 13020, 13230, 13524, 13671, 14260, 14490, 14973, 15190, 16740, 16905, 17388, 18228, 19251, 19530, 19964, 20286, 21390, 21735, 22540, 22785, 23436, 24955, 25668, 26460, 27342, 28980, 29295, 29946, 30380, 30429, 32085, 33810, 34937, 38502, 39060, 40572, 41013, 42780, 43470, 44919, 45570, 49910, 50715, 54684, 58590, 59892, 60858, 64170, 67620, 68355, 69874, 74865, 77004, 82026, 86940, 89838, 91140, 96255, 99820, 101430, 104811, 117180, 121716, 128340, 134757, 136710, 139748, 149730, 152145, 164052, 174685, 179676, 192510, 202860, 205065, 209622, 224595, 269514, 273420, 299460, 304290, 314433, 349370, 385020, 410130, 419244, 449190, 524055, 539028, 608580, 628866, 673785, 698740, 820260, 898380, 943299, 1048110, 1257732, 1347570, 1572165, 1886598, 2096220, 2695140, 3144330, 3773196, 4716495, 6288660, 9432990, 18865980]

約数ペア:

[(1, 18865980), (2, 9432990), (3, 6288660), (4, 4716495), (5, 3773196), (6, 3144330), (7, 2695140), (9, 2096220), (10, 1886598), (12, 1572165), (14, 1347570), (15, 1257732), (18, 1048110), (20, 943299), (21, 898380), (23, 820260), (27, 698740), (28, 673785), (30, 628866), (31, 608580), (35, 539028), (36, 524055), (42, 449190), (45, 419244), (46, 410130), (49, 385020), (54, 349370), (60, 314433), (62, 304290), (63, 299460), (69, 273420), (70, 269514), (84, 224595), (90, 209622), (92, 205065), (93, 202860), (98, 192510), (105, 179676), (108, 174685), (115, 164052), (124, 152145), (126, 149730), (135, 139748), (138, 136710), (140, 134757), (147, 128340), (155, 121716), (161, 117180), (180, 104811), (186, 101430), (189, 99820), (196, 96255), (207, 91140), (210, 89838), (217, 86940), (230, 82026), (245, 77004), (252, 74865), (270, 69874), (276, 68355), (279, 67620), (294, 64170), (310, 60858), (315, 59892), (322, 58590), (345, 54684), (372, 50715), (378, 49910), (414, 45570), (420, 44919), (434, 43470), (441, 42780), (460, 41013), (465, 40572), (483, 39060), (490, 38502), (540, 34937), (558, 33810), (588, 32085), (620, 30429), (621, 30380), (630, 29946), (644, 29295), (651, 28980), (690, 27342), (713, 26460), (735, 25668), (756, 24955), (805, 23436), (828, 22785), (837, 22540), (868, 21735), (882, 21390), (930, 20286), (945, 19964), (966, 19530), (980, 19251), (1035, 18228), (1085, 17388), (1116, 16905), (1127, 16740), (1242, 15190), (1260, 14973), (1302, 14490), (1323, 14260), (1380, 13671), (1395, 13524), (1426, 13230), (1449, 13020), (1470, 12834), (1519, 12420), (1610, 11718), (1674, 11270), (1764, 10695), (1860, 10143), (1890, 9982), (1932, 9765), (1953, 9660), (2070, 9114), (2139, 8820), (2170, 8694), (2205, 8556), (2254, 8370), (2415, 7812), (2484, 7595), (2604, 7245), (2646, 7130), (2790, 6762), (2852, 6615), (2898, 6510), (2940, 6417), (3038, 6210), (3105, 6076), (3220, 5859), (3255, 5796), (3348, 5635), (3381, 5580), (3565, 5292), (3780, 4991), (3906, 4830), (4140, 4557), (4185, 4508), (4278, 4410), (4340, 4347)]