21142595

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1049}}^1$

素因数の和:1222

約数の個数: 16

約数和(自身を含む): 26460000

約数和(自身を除く): 5317405

約数列:

[1, 5, 29, 139, 145, 695, 1049, 4031, 5245, 20155, 30421, 145811, 152105, 729055, 4228519, 21142595]

約数ペア:

[(1, 21142595), (5, 4228519), (29, 729055), (139, 152105), (145, 145811), (695, 30421), (1049, 20155), (4031, 5245)]