21090160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2897}}^1$

素因数の和:2930

約数の個数: 80

約数和(自身を含む): 60371136

約数和(自身を除く): 39280976

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1456, 1820, 2897, 3640, 5794, 7280, 11588, 14485, 20279, 23176, 28970, 37661, 40558, 46352, 57940, 75322, 81116, 101395, 115880, 150644, 162232, 188305, 202790, 231760, 263627, 301288, 324464, 376610, 405580, 527254, 602576, 753220, 811160, 1054508, 1318135, 1506440, 1622320, 2109016, 2636270, 3012880, 4218032, 5272540, 10545080, 21090160]

約数ペア:

[(1, 21090160), (2, 10545080), (4, 5272540), (5, 4218032), (7, 3012880), (8, 2636270), (10, 2109016), (13, 1622320), (14, 1506440), (16, 1318135), (20, 1054508), (26, 811160), (28, 753220), (35, 602576), (40, 527254), (52, 405580), (56, 376610), (65, 324464), (70, 301288), (80, 263627), (91, 231760), (104, 202790), (112, 188305), (130, 162232), (140, 150644), (182, 115880), (208, 101395), (260, 81116), (280, 75322), (364, 57940), (455, 46352), (520, 40558), (560, 37661), (728, 28970), (910, 23176), (1040, 20279), (1456, 14485), (1820, 11588), (2897, 7280), (3640, 5794)]