20620885

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2003}}^1$

素因数の和:2108

約数の個数: 16

約数和(自身を含む): 25971840

約数和(自身を除く): 5350955

約数列:

[1, 5, 29, 71, 145, 355, 2003, 2059, 10015, 10295, 58087, 142213, 290435, 711065, 4124177, 20620885]

約数ペア:

[(1, 20620885), (5, 4124177), (29, 711065), (71, 290435), (145, 142213), (355, 58087), (2003, 10295), (2059, 10015)]