27889865

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 34183296

約数和(自身を除く): 6293431

約数列:

[1, 5, 71, 251, 313, 355, 1255, 1565, 17821, 22223, 78563, 89105, 111115, 392815, 5577973, 27889865]

約数ペア:

[(1, 27889865), (5, 5577973), (71, 392815), (251, 111115), (313, 89105), (355, 78563), (1255, 22223), (1565, 17821)]