81965884

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1861}}^1$

素因数の和:1907

約数の個数: 72

約数和(自身を含む): 194154464

約数和(自身を除く): 112188580

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 121, 143, 154, 182, 242, 286, 308, 364, 484, 572, 847, 1001, 1573, 1694, 1861, 2002, 3146, 3388, 3722, 4004, 6292, 7444, 11011, 13027, 20471, 22022, 24193, 26054, 40942, 44044, 48386, 52108, 81884, 96772, 143297, 169351, 225181, 266123, 286594, 338702, 450362, 532246, 573188, 677404, 900724, 1064492, 1576267, 1862861, 2927353, 3152534, 3725722, 5854706, 6305068, 7451444, 11709412, 20491471, 40982942, 81965884]

約数ペア:

[(1, 81965884), (2, 40982942), (4, 20491471), (7, 11709412), (11, 7451444), (13, 6305068), (14, 5854706), (22, 3725722), (26, 3152534), (28, 2927353), (44, 1862861), (52, 1576267), (77, 1064492), (91, 900724), (121, 677404), (143, 573188), (154, 532246), (182, 450362), (242, 338702), (286, 286594), (308, 266123), (364, 225181), (484, 169351), (572, 143297), (847, 96772), (1001, 81884), (1573, 52108), (1694, 48386), (1861, 44044), (2002, 40942), (3146, 26054), (3388, 24193), (3722, 22022), (4004, 20471), (6292, 13027), (7444, 11011)]