18915120

素因数分解:

$2^4\times 3^5\times 5^1\times 7^1\times {\mathrm{139}}^1$

素因数の和:174

約数の個数: 240

約数和(自身を含む): 75828480

約数和(自身を除く): 56913360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 139, 140, 144, 162, 168, 180, 189, 210, 216, 240, 243, 252, 270, 278, 280, 315, 324, 336, 360, 378, 405, 417, 420, 432, 486, 504, 540, 556, 560, 567, 630, 648, 695, 720, 756, 810, 834, 840, 945, 972, 973, 1008, 1080, 1112, 1134, 1215, 1251, 1260, 1296, 1390, 1512, 1620, 1668, 1680, 1701, 1890, 1944, 1946, 2085, 2160, 2224, 2268, 2430, 2502, 2520, 2780, 2835, 2919, 3024, 3240, 3336, 3402, 3753, 3780, 3888, 3892, 4170, 4536, 4860, 4865, 5004, 5040, 5560, 5670, 5838, 6255, 6480, 6672, 6804, 7506, 7560, 7784, 8340, 8505, 8757, 9072, 9720, 9730, 10008, 11120, 11259, 11340, 11676, 12510, 13608, 14595, 15012, 15120, 15568, 16680, 17010, 17514, 18765, 19440, 19460, 20016, 22518, 22680, 23352, 25020, 26271, 27216, 29190, 30024, 33360, 33777, 34020, 35028, 37530, 38920, 43785, 45036, 45360, 46704, 50040, 52542, 56295, 58380, 60048, 67554, 68040, 70056, 75060, 77840, 78813, 87570, 90072, 100080, 105084, 112590, 116760, 131355, 135108, 136080, 140112, 150120, 157626, 168885, 175140, 180144, 210168, 225180, 233520, 236439, 262710, 270216, 300240, 315252, 337770, 350280, 394065, 420336, 450360, 472878, 525420, 540432, 630504, 675540, 700560, 788130, 900720, 945756, 1050840, 1182195, 1261008, 1351080, 1576260, 1891512, 2101680, 2364390, 2702160, 3152520, 3783024, 4728780, 6305040, 9457560, 18915120]

約数ペア:

[(1, 18915120), (2, 9457560), (3, 6305040), (4, 4728780), (5, 3783024), (6, 3152520), (7, 2702160), (8, 2364390), (9, 2101680), (10, 1891512), (12, 1576260), (14, 1351080), (15, 1261008), (16, 1182195), (18, 1050840), (20, 945756), (21, 900720), (24, 788130), (27, 700560), (28, 675540), (30, 630504), (35, 540432), (36, 525420), (40, 472878), (42, 450360), (45, 420336), (48, 394065), (54, 350280), (56, 337770), (60, 315252), (63, 300240), (70, 270216), (72, 262710), (80, 236439), (81, 233520), (84, 225180), (90, 210168), (105, 180144), (108, 175140), (112, 168885), (120, 157626), (126, 150120), (135, 140112), (139, 136080), (140, 135108), (144, 131355), (162, 116760), (168, 112590), (180, 105084), (189, 100080), (210, 90072), (216, 87570), (240, 78813), (243, 77840), (252, 75060), (270, 70056), (278, 68040), (280, 67554), (315, 60048), (324, 58380), (336, 56295), (360, 52542), (378, 50040), (405, 46704), (417, 45360), (420, 45036), (432, 43785), (486, 38920), (504, 37530), (540, 35028), (556, 34020), (560, 33777), (567, 33360), (630, 30024), (648, 29190), (695, 27216), (720, 26271), (756, 25020), (810, 23352), (834, 22680), (840, 22518), (945, 20016), (972, 19460), (973, 19440), (1008, 18765), (1080, 17514), (1112, 17010), (1134, 16680), (1215, 15568), (1251, 15120), (1260, 15012), (1296, 14595), (1390, 13608), (1512, 12510), (1620, 11676), (1668, 11340), (1680, 11259), (1701, 11120), (1890, 10008), (1944, 9730), (1946, 9720), (2085, 9072), (2160, 8757), (2224, 8505), (2268, 8340), (2430, 7784), (2502, 7560), (2520, 7506), (2780, 6804), (2835, 6672), (2919, 6480), (3024, 6255), (3240, 5838), (3336, 5670), (3402, 5560), (3753, 5040), (3780, 5004), (3888, 4865), (3892, 4860), (4170, 4536)]