281908989

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 433392960

約数和(自身を除く): 151483971

約数列:

[1, 3, 9, 41, 43, 109, 123, 129, 163, 327, 369, 387, 489, 981, 1467, 1763, 4469, 4687, 5289, 6683, 7009, 13407, 14061, 15867, 17767, 20049, 21027, 40221, 42183, 53301, 60147, 63081, 159903, 192167, 287369, 576501, 728447, 763981, 862107, 1729503, 2185341, 2291943, 2586321, 6556023, 6875829, 31323221, 93969663, 281908989]

約数ペア:

[(1, 281908989), (3, 93969663), (9, 31323221), (41, 6875829), (43, 6556023), (109, 2586321), (123, 2291943), (129, 2185341), (163, 1729503), (327, 862107), (369, 763981), (387, 728447), (489, 576501), (981, 287369), (1467, 192167), (1763, 159903), (4469, 63081), (4687, 60147), (5289, 53301), (6683, 42183), (7009, 40221), (13407, 21027), (14061, 20049), (15867, 17767)]