491205520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3719}}^1$

素因数の和:3872

約数の個数: 80

約数和(自身を含む): 1239920640

約数和(自身を除く): 748715120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 127, 130, 208, 254, 260, 508, 520, 635, 1016, 1040, 1270, 1651, 2032, 2540, 3302, 3719, 5080, 6604, 7438, 8255, 10160, 13208, 14876, 16510, 18595, 26416, 29752, 33020, 37190, 48347, 59504, 66040, 74380, 96694, 132080, 148760, 193388, 241735, 297520, 386776, 472313, 483470, 773552, 944626, 966940, 1889252, 1933880, 2361565, 3778504, 3867760, 4723130, 6140069, 7557008, 9446260, 12280138, 18892520, 24560276, 30700345, 37785040, 49120552, 61400690, 98241104, 122801380, 245602760, 491205520]

約数ペア:

[(1, 491205520), (2, 245602760), (4, 122801380), (5, 98241104), (8, 61400690), (10, 49120552), (13, 37785040), (16, 30700345), (20, 24560276), (26, 18892520), (40, 12280138), (52, 9446260), (65, 7557008), (80, 6140069), (104, 4723130), (127, 3867760), (130, 3778504), (208, 2361565), (254, 1933880), (260, 1889252), (508, 966940), (520, 944626), (635, 773552), (1016, 483470), (1040, 472313), (1270, 386776), (1651, 297520), (2032, 241735), (2540, 193388), (3302, 148760), (3719, 132080), (5080, 96694), (6604, 74380), (7438, 66040), (8255, 59504), (10160, 48347), (13208, 37190), (14876, 33020), (16510, 29752), (18595, 26416)]