21088480

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1032

約数の個数: 96

約数和(自身を含む): 59996160

約数和(自身を除く): 38907680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 380, 532, 560, 608, 665, 760, 991, 1064, 1120, 1330, 1520, 1982, 2128, 2660, 3040, 3964, 4256, 4955, 5320, 6937, 7928, 9910, 10640, 13874, 15856, 18829, 19820, 21280, 27748, 31712, 34685, 37658, 39640, 55496, 69370, 75316, 79280, 94145, 110992, 131803, 138740, 150632, 158560, 188290, 221984, 263606, 277480, 301264, 376580, 527212, 554960, 602528, 659015, 753160, 1054424, 1109920, 1318030, 1506320, 2108848, 2636060, 3012640, 4217696, 5272120, 10544240, 21088480]

約数ペア:

[(1, 21088480), (2, 10544240), (4, 5272120), (5, 4217696), (7, 3012640), (8, 2636060), (10, 2108848), (14, 1506320), (16, 1318030), (19, 1109920), (20, 1054424), (28, 753160), (32, 659015), (35, 602528), (38, 554960), (40, 527212), (56, 376580), (70, 301264), (76, 277480), (80, 263606), (95, 221984), (112, 188290), (133, 158560), (140, 150632), (152, 138740), (160, 131803), (190, 110992), (224, 94145), (266, 79280), (280, 75316), (304, 69370), (380, 55496), (532, 39640), (560, 37658), (608, 34685), (665, 31712), (760, 27748), (991, 21280), (1064, 19820), (1120, 18829), (1330, 15856), (1520, 13874), (1982, 10640), (2128, 9910), (2660, 7928), (3040, 6937), (3964, 5320), (4256, 4955)]