20111815

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{313}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 24687936

約数和(自身を除く): 4576121

約数列:

[1, 5, 71, 181, 313, 355, 905, 1565, 12851, 22223, 56653, 64255, 111115, 283265, 4022363, 20111815]

約数ペア:

[(1, 20111815), (5, 4022363), (71, 283265), (181, 111115), (313, 64255), (355, 56653), (905, 22223), (1565, 12851)]