20200685

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2459}}^1$

素因数の和:2548

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 5304595

約数列:

[1, 5, 31, 53, 155, 265, 1643, 2459, 8215, 12295, 76229, 130327, 381145, 651635, 4040137, 20200685]

約数ペア:

[(1, 20200685), (5, 4040137), (31, 651635), (53, 381145), (155, 130327), (265, 76229), (1643, 12295), (2459, 8215)]