20512080

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{919}}^1$

素因数の和:969

約数の個数: 120

約数和(自身を含む): 71185920

約数和(自身を除く): 50673840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 919, 930, 1116, 1240, 1395, 1488, 1838, 1860, 2232, 2480, 2757, 2790, 3676, 3720, 4464, 4595, 5514, 5580, 7352, 7440, 8271, 9190, 11028, 11160, 13785, 14704, 16542, 18380, 22056, 22320, 27570, 28489, 33084, 36760, 41355, 44112, 55140, 56978, 66168, 73520, 82710, 85467, 110280, 113956, 132336, 142445, 165420, 170934, 220560, 227912, 256401, 284890, 330840, 341868, 427335, 455824, 512802, 569780, 661680, 683736, 854670, 1025604, 1139560, 1282005, 1367472, 1709340, 2051208, 2279120, 2564010, 3418680, 4102416, 5128020, 6837360, 10256040, 20512080]

約数ペア:

[(1, 20512080), (2, 10256040), (3, 6837360), (4, 5128020), (5, 4102416), (6, 3418680), (8, 2564010), (9, 2279120), (10, 2051208), (12, 1709340), (15, 1367472), (16, 1282005), (18, 1139560), (20, 1025604), (24, 854670), (30, 683736), (31, 661680), (36, 569780), (40, 512802), (45, 455824), (48, 427335), (60, 341868), (62, 330840), (72, 284890), (80, 256401), (90, 227912), (93, 220560), (120, 170934), (124, 165420), (144, 142445), (155, 132336), (180, 113956), (186, 110280), (240, 85467), (248, 82710), (279, 73520), (310, 66168), (360, 56978), (372, 55140), (465, 44112), (496, 41355), (558, 36760), (620, 33084), (720, 28489), (744, 27570), (919, 22320), (930, 22056), (1116, 18380), (1240, 16542), (1395, 14704), (1488, 13785), (1838, 11160), (1860, 11028), (2232, 9190), (2480, 8271), (2757, 7440), (2790, 7352), (3676, 5580), (3720, 5514), (4464, 4595)]