81666351

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2216

約数の個数: 48

約数和(自身を含む): 141654240

約数和(自身を除く): 59987889

約数列:

[1, 3, 9, 13, 17, 19, 39, 51, 57, 117, 153, 171, 221, 247, 323, 663, 741, 969, 1989, 2161, 2223, 2907, 4199, 6483, 12597, 19449, 28093, 36737, 37791, 41059, 84279, 110211, 123177, 252837, 330633, 369531, 477581, 533767, 698003, 1432743, 1601301, 2094009, 4298229, 4803903, 6282027, 9074039, 27222117, 81666351]

約数ペア:

[(1, 81666351), (3, 27222117), (9, 9074039), (13, 6282027), (17, 4803903), (19, 4298229), (39, 2094009), (51, 1601301), (57, 1432743), (117, 698003), (153, 533767), (171, 477581), (221, 369531), (247, 330633), (323, 252837), (663, 123177), (741, 110211), (969, 84279), (1989, 41059), (2161, 37791), (2223, 36737), (2907, 28093), (4199, 19449), (6483, 12597)]