81641840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:439

約数の個数: 120

約数和(自身を含む): 225186480

約数和(自身を除く): 143544640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 59, 70, 80, 98, 112, 118, 140, 196, 236, 245, 280, 295, 353, 392, 413, 472, 490, 560, 590, 706, 784, 826, 944, 980, 1180, 1412, 1652, 1765, 1960, 2065, 2360, 2471, 2824, 2891, 3304, 3530, 3920, 4130, 4720, 4942, 5648, 5782, 6608, 7060, 8260, 9884, 11564, 12355, 14120, 14455, 16520, 17297, 19768, 20827, 23128, 24710, 28240, 28910, 33040, 34594, 39536, 41654, 46256, 49420, 57820, 69188, 83308, 86485, 98840, 104135, 115640, 138376, 145789, 166616, 172970, 197680, 208270, 231280, 276752, 291578, 333232, 345940, 416540, 583156, 691880, 728945, 833080, 1020523, 1166312, 1383760, 1457890, 1666160, 2041046, 2332624, 2915780, 4082092, 5102615, 5831560, 8164184, 10205230, 11663120, 16328368, 20410460, 40820920, 81641840]

約数ペア:

[(1, 81641840), (2, 40820920), (4, 20410460), (5, 16328368), (7, 11663120), (8, 10205230), (10, 8164184), (14, 5831560), (16, 5102615), (20, 4082092), (28, 2915780), (35, 2332624), (40, 2041046), (49, 1666160), (56, 1457890), (59, 1383760), (70, 1166312), (80, 1020523), (98, 833080), (112, 728945), (118, 691880), (140, 583156), (196, 416540), (236, 345940), (245, 333232), (280, 291578), (295, 276752), (353, 231280), (392, 208270), (413, 197680), (472, 172970), (490, 166616), (560, 145789), (590, 138376), (706, 115640), (784, 104135), (826, 98840), (944, 86485), (980, 83308), (1180, 69188), (1412, 57820), (1652, 49420), (1765, 46256), (1960, 41654), (2065, 39536), (2360, 34594), (2471, 33040), (2824, 28910), (2891, 28240), (3304, 24710), (3530, 23128), (3920, 20827), (4130, 19768), (4720, 17297), (4942, 16520), (5648, 14455), (5782, 14120), (6608, 12355), (7060, 11564), (8260, 9884)]