18707193

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 40

約数和(自身を含む): 29516256

約数和(自身を除く): 10809063

約数列:

[1, 3, 9, 27, 41, 43, 81, 123, 129, 131, 369, 387, 393, 1107, 1161, 1179, 1763, 3321, 3483, 3537, 5289, 5371, 5633, 10611, 15867, 16113, 16899, 47601, 48339, 50697, 142803, 145017, 152091, 230953, 435051, 456273, 692859, 2078577, 6235731, 18707193]

約数ペア:

[(1, 18707193), (3, 6235731), (9, 2078577), (27, 692859), (41, 456273), (43, 435051), (81, 230953), (123, 152091), (129, 145017), (131, 142803), (369, 50697), (387, 48339), (393, 47601), (1107, 16899), (1161, 16113), (1179, 15867), (1763, 10611), (3321, 5633), (3483, 5371), (3537, 5289)]