20708280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:142

約数の個数: 192

約数和(自身を含む): 73120320

約数和(自身を除く): 52412040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 41, 45, 46, 60, 61, 69, 72, 82, 90, 92, 115, 120, 122, 123, 138, 164, 180, 183, 184, 205, 207, 230, 244, 246, 276, 305, 328, 345, 360, 366, 369, 410, 414, 460, 488, 492, 549, 552, 610, 615, 690, 732, 738, 820, 828, 915, 920, 943, 984, 1035, 1098, 1220, 1230, 1380, 1403, 1464, 1476, 1640, 1656, 1830, 1845, 1886, 2070, 2196, 2440, 2460, 2501, 2745, 2760, 2806, 2829, 2952, 3660, 3690, 3772, 4140, 4209, 4392, 4715, 4920, 5002, 5490, 5612, 5658, 7015, 7320, 7380, 7503, 7544, 8280, 8418, 8487, 9430, 10004, 10980, 11224, 11316, 12505, 12627, 14030, 14145, 14760, 15006, 16836, 16974, 18860, 20008, 21045, 21960, 22509, 22632, 25010, 25254, 28060, 28290, 30012, 33672, 33948, 37515, 37720, 42090, 42435, 45018, 50020, 50508, 56120, 56580, 57523, 60024, 63135, 67896, 75030, 84180, 84870, 90036, 100040, 101016, 112545, 113160, 115046, 126270, 150060, 168360, 169740, 172569, 180072, 225090, 230092, 252540, 287615, 300120, 339480, 345138, 450180, 460184, 505080, 517707, 575230, 690276, 862845, 900360, 1035414, 1150460, 1380552, 1725690, 2070828, 2300920, 2588535, 3451380, 4141656, 5177070, 6902760, 10354140, 20708280]

約数ペア:

[(1, 20708280), (2, 10354140), (3, 6902760), (4, 5177070), (5, 4141656), (6, 3451380), (8, 2588535), (9, 2300920), (10, 2070828), (12, 1725690), (15, 1380552), (18, 1150460), (20, 1035414), (23, 900360), (24, 862845), (30, 690276), (36, 575230), (40, 517707), (41, 505080), (45, 460184), (46, 450180), (60, 345138), (61, 339480), (69, 300120), (72, 287615), (82, 252540), (90, 230092), (92, 225090), (115, 180072), (120, 172569), (122, 169740), (123, 168360), (138, 150060), (164, 126270), (180, 115046), (183, 113160), (184, 112545), (205, 101016), (207, 100040), (230, 90036), (244, 84870), (246, 84180), (276, 75030), (305, 67896), (328, 63135), (345, 60024), (360, 57523), (366, 56580), (369, 56120), (410, 50508), (414, 50020), (460, 45018), (488, 42435), (492, 42090), (549, 37720), (552, 37515), (610, 33948), (615, 33672), (690, 30012), (732, 28290), (738, 28060), (820, 25254), (828, 25010), (915, 22632), (920, 22509), (943, 21960), (984, 21045), (1035, 20008), (1098, 18860), (1220, 16974), (1230, 16836), (1380, 15006), (1403, 14760), (1464, 14145), (1476, 14030), (1640, 12627), (1656, 12505), (1830, 11316), (1845, 11224), (1886, 10980), (2070, 10004), (2196, 9430), (2440, 8487), (2460, 8418), (2501, 8280), (2745, 7544), (2760, 7503), (2806, 7380), (2829, 7320), (2952, 7015), (3660, 5658), (3690, 5612), (3772, 5490), (4140, 5002), (4209, 4920), (4392, 4715)]