12987995

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:466

約数の個数: 16

約数和(自身を含む): 15966720

約数和(自身を除く): 2978725

約数列:

[1, 5, 79, 131, 251, 395, 655, 1255, 10349, 19829, 32881, 51745, 99145, 164405, 2597599, 12987995]

約数ペア:

[(1, 12987995), (5, 2597599), (79, 164405), (131, 99145), (251, 51745), (395, 32881), (655, 19829), (1255, 10349)]