2809885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{311}}^1$

素因数の和:468

約数の個数: 16

約数和(自身を含む): 3669120

約数和(自身を除く): 859235

約数列:

[1, 5, 13, 65, 139, 311, 695, 1555, 1807, 4043, 9035, 20215, 43229, 216145, 561977, 2809885]

約数ペア:

[(1, 2809885), (5, 561977), (13, 216145), (65, 43229), (139, 20215), (311, 9035), (695, 4043), (1555, 1807)]