18687960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 192

約数和(自身を含む): 66156480

約数和(自身を除く): 47468520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 37, 40, 45, 46, 60, 61, 69, 72, 74, 90, 92, 111, 115, 120, 122, 138, 148, 180, 183, 184, 185, 207, 222, 230, 244, 276, 296, 305, 333, 345, 360, 366, 370, 414, 444, 460, 488, 549, 552, 555, 610, 666, 690, 732, 740, 828, 851, 888, 915, 920, 1035, 1098, 1110, 1220, 1332, 1380, 1403, 1464, 1480, 1656, 1665, 1702, 1830, 2070, 2196, 2220, 2257, 2440, 2553, 2664, 2745, 2760, 2806, 3330, 3404, 3660, 4140, 4209, 4255, 4392, 4440, 4514, 5106, 5490, 5612, 6660, 6771, 6808, 7015, 7320, 7659, 8280, 8418, 8510, 9028, 10212, 10980, 11224, 11285, 12627, 12765, 13320, 13542, 14030, 15318, 16836, 17020, 18056, 20313, 20424, 21045, 21960, 22570, 25254, 25530, 27084, 28060, 30636, 33672, 33855, 34040, 38295, 40626, 42090, 45140, 50508, 51060, 51911, 54168, 56120, 61272, 63135, 67710, 76590, 81252, 84180, 90280, 101016, 101565, 102120, 103822, 126270, 135420, 153180, 155733, 162504, 168360, 203130, 207644, 252540, 259555, 270840, 306360, 311466, 406260, 415288, 467199, 505080, 519110, 622932, 778665, 812520, 934398, 1038220, 1245864, 1557330, 1868796, 2076440, 2335995, 3114660, 3737592, 4671990, 6229320, 9343980, 18687960]

約数ペア:

[(1, 18687960), (2, 9343980), (3, 6229320), (4, 4671990), (5, 3737592), (6, 3114660), (8, 2335995), (9, 2076440), (10, 1868796), (12, 1557330), (15, 1245864), (18, 1038220), (20, 934398), (23, 812520), (24, 778665), (30, 622932), (36, 519110), (37, 505080), (40, 467199), (45, 415288), (46, 406260), (60, 311466), (61, 306360), (69, 270840), (72, 259555), (74, 252540), (90, 207644), (92, 203130), (111, 168360), (115, 162504), (120, 155733), (122, 153180), (138, 135420), (148, 126270), (180, 103822), (183, 102120), (184, 101565), (185, 101016), (207, 90280), (222, 84180), (230, 81252), (244, 76590), (276, 67710), (296, 63135), (305, 61272), (333, 56120), (345, 54168), (360, 51911), (366, 51060), (370, 50508), (414, 45140), (444, 42090), (460, 40626), (488, 38295), (549, 34040), (552, 33855), (555, 33672), (610, 30636), (666, 28060), (690, 27084), (732, 25530), (740, 25254), (828, 22570), (851, 21960), (888, 21045), (915, 20424), (920, 20313), (1035, 18056), (1098, 17020), (1110, 16836), (1220, 15318), (1332, 14030), (1380, 13542), (1403, 13320), (1464, 12765), (1480, 12627), (1656, 11285), (1665, 11224), (1702, 10980), (1830, 10212), (2070, 9028), (2196, 8510), (2220, 8418), (2257, 8280), (2440, 7659), (2553, 7320), (2664, 7015), (2745, 6808), (2760, 6771), (2806, 6660), (3330, 5612), (3404, 5490), (3660, 5106), (4140, 4514), (4209, 4440), (4255, 4392)]