19985067

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{457}}^1$

素因数の和:619

約数の個数: 24

約数和(自身を含む): 29865264

約数和(自身を除く): 9880197

約数列:

[1, 3, 9, 43, 113, 129, 339, 387, 457, 1017, 1371, 4113, 4859, 14577, 19651, 43731, 51641, 58953, 154923, 176859, 464769, 2220563, 6661689, 19985067]

約数ペア:

[(1, 19985067), (3, 6661689), (9, 2220563), (43, 464769), (113, 176859), (129, 154923), (339, 58953), (387, 51641), (457, 43731), (1017, 19651), (1371, 14577), (4113, 4859)]