18715707

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{353}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 27943344

約数和(自身を除く): 9227637

約数列:

[1, 3, 9, 43, 129, 137, 353, 387, 411, 1059, 1233, 3177, 5891, 15179, 17673, 45537, 48361, 53019, 136611, 145083, 435249, 2079523, 6238569, 18715707]

約数ペア:

[(1, 18715707), (3, 6238569), (9, 2079523), (43, 435249), (129, 145083), (137, 136611), (353, 53019), (387, 48361), (411, 45537), (1059, 17673), (1233, 15179), (3177, 5891)]