18780423

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2383}}^1$

素因数の和:2494

約数の個数: 16

約数和(自身を含む): 26090496

約数和(自身を除く): 7310073

約数列:

[1, 3, 37, 71, 111, 213, 2383, 2627, 7149, 7881, 88171, 169193, 264513, 507579, 6260141, 18780423]

約数ペア:

[(1, 18780423), (3, 6260141), (37, 507579), (71, 264513), (111, 169193), (213, 88171), (2383, 7881), (2627, 7149)]