12187505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3208

約数の個数: 16

約数和(自身を含む): 16184448

約数和(自身を除く): 3996943

約数列:

[1, 5, 11, 55, 71, 355, 781, 3121, 3905, 15605, 34331, 171655, 221591, 1107955, 2437501, 12187505]

約数ペア:

[(1, 12187505), (5, 2437501), (11, 1107955), (55, 221591), (71, 171655), (355, 34331), (781, 15605), (3121, 3905)]