81565841

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{1109}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 101232000

約数和(自身を除く): 19666159

約数列:

[1, 7, 19, 49, 79, 133, 553, 931, 1109, 1501, 3871, 7763, 10507, 21071, 54341, 73549, 87611, 147497, 613277, 1032479, 1664609, 4292939, 11652263, 81565841]

約数ペア:

[(1, 81565841), (7, 11652263), (19, 4292939), (49, 1664609), (79, 1032479), (133, 613277), (553, 147497), (931, 87611), (1109, 73549), (1501, 54341), (3871, 21071), (7763, 10507)]