21184240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:231

約数の個数: 160

約数和(自身を含む): 64995840

約数和(自身を除く): 43811600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 19, 20, 22, 28, 35, 38, 40, 44, 55, 56, 70, 76, 77, 80, 88, 95, 110, 112, 133, 140, 152, 154, 176, 181, 190, 209, 220, 266, 280, 304, 308, 362, 380, 385, 418, 440, 532, 560, 616, 665, 724, 760, 770, 836, 880, 905, 1045, 1064, 1232, 1267, 1330, 1448, 1463, 1520, 1540, 1672, 1810, 1991, 2090, 2128, 2534, 2660, 2896, 2926, 3080, 3344, 3439, 3620, 3982, 4180, 5068, 5320, 5852, 6160, 6335, 6878, 7240, 7315, 7964, 8360, 9955, 10136, 10640, 11704, 12670, 13756, 13937, 14480, 14630, 15928, 16720, 17195, 19910, 20272, 23408, 24073, 25340, 27512, 27874, 29260, 31856, 34390, 37829, 39820, 48146, 50680, 55024, 55748, 58520, 68780, 69685, 75658, 79640, 96292, 101360, 111496, 117040, 120365, 137560, 139370, 151316, 159280, 189145, 192584, 222992, 240730, 264803, 275120, 278740, 302632, 378290, 385168, 481460, 529606, 557480, 605264, 756580, 962920, 1059212, 1114960, 1324015, 1513160, 1925840, 2118424, 2648030, 3026320, 4236848, 5296060, 10592120, 21184240]

約数ペア:

[(1, 21184240), (2, 10592120), (4, 5296060), (5, 4236848), (7, 3026320), (8, 2648030), (10, 2118424), (11, 1925840), (14, 1513160), (16, 1324015), (19, 1114960), (20, 1059212), (22, 962920), (28, 756580), (35, 605264), (38, 557480), (40, 529606), (44, 481460), (55, 385168), (56, 378290), (70, 302632), (76, 278740), (77, 275120), (80, 264803), (88, 240730), (95, 222992), (110, 192584), (112, 189145), (133, 159280), (140, 151316), (152, 139370), (154, 137560), (176, 120365), (181, 117040), (190, 111496), (209, 101360), (220, 96292), (266, 79640), (280, 75658), (304, 69685), (308, 68780), (362, 58520), (380, 55748), (385, 55024), (418, 50680), (440, 48146), (532, 39820), (560, 37829), (616, 34390), (665, 31856), (724, 29260), (760, 27874), (770, 27512), (836, 25340), (880, 24073), (905, 23408), (1045, 20272), (1064, 19910), (1232, 17195), (1267, 16720), (1330, 15928), (1448, 14630), (1463, 14480), (1520, 13937), (1540, 13756), (1672, 12670), (1810, 11704), (1991, 10640), (2090, 10136), (2128, 9955), (2534, 8360), (2660, 7964), (2896, 7315), (2926, 7240), (3080, 6878), (3344, 6335), (3439, 6160), (3620, 5852), (3982, 5320), (4180, 5068)]