20504880

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{863}}^1$

素因数の和:896

約数の個数: 160

約数和(自身を含む): 77137920

約数和(自身を除く): 56633040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 99, 108, 110, 120, 132, 135, 144, 165, 176, 180, 198, 216, 220, 240, 264, 270, 297, 330, 360, 396, 432, 440, 495, 528, 540, 594, 660, 720, 792, 863, 880, 990, 1080, 1188, 1320, 1485, 1584, 1726, 1980, 2160, 2376, 2589, 2640, 2970, 3452, 3960, 4315, 4752, 5178, 5940, 6904, 7767, 7920, 8630, 9493, 10356, 11880, 12945, 13808, 15534, 17260, 18986, 20712, 23301, 23760, 25890, 28479, 31068, 34520, 37972, 38835, 41424, 46602, 47465, 51780, 56958, 62136, 69040, 75944, 77670, 85437, 93204, 94930, 103560, 113916, 116505, 124272, 142395, 151888, 155340, 170874, 186408, 189860, 207120, 227832, 233010, 256311, 284790, 310680, 341748, 372816, 379720, 427185, 455664, 466020, 512622, 569580, 621360, 683496, 759440, 854370, 932040, 1025244, 1139160, 1281555, 1366992, 1708740, 1864080, 2050488, 2278320, 2563110, 3417480, 4100976, 5126220, 6834960, 10252440, 20504880]

約数ペア:

[(1, 20504880), (2, 10252440), (3, 6834960), (4, 5126220), (5, 4100976), (6, 3417480), (8, 2563110), (9, 2278320), (10, 2050488), (11, 1864080), (12, 1708740), (15, 1366992), (16, 1281555), (18, 1139160), (20, 1025244), (22, 932040), (24, 854370), (27, 759440), (30, 683496), (33, 621360), (36, 569580), (40, 512622), (44, 466020), (45, 455664), (48, 427185), (54, 379720), (55, 372816), (60, 341748), (66, 310680), (72, 284790), (80, 256311), (88, 233010), (90, 227832), (99, 207120), (108, 189860), (110, 186408), (120, 170874), (132, 155340), (135, 151888), (144, 142395), (165, 124272), (176, 116505), (180, 113916), (198, 103560), (216, 94930), (220, 93204), (240, 85437), (264, 77670), (270, 75944), (297, 69040), (330, 62136), (360, 56958), (396, 51780), (432, 47465), (440, 46602), (495, 41424), (528, 38835), (540, 37972), (594, 34520), (660, 31068), (720, 28479), (792, 25890), (863, 23760), (880, 23301), (990, 20712), (1080, 18986), (1188, 17260), (1320, 15534), (1485, 13808), (1584, 12945), (1726, 11880), (1980, 10356), (2160, 9493), (2376, 8630), (2589, 7920), (2640, 7767), (2970, 6904), (3452, 5940), (3960, 5178), (4315, 4752)]