208857980

素因数分解:

$2^2\times 5^1\times {\mathrm{1291}}^1\times {\mathrm{8089}}^1$

素因数の和:9389

約数の個数: 24

約数和(自身を含む): 438995760

約数和(自身を除く): 230137780

約数列:

[1, 2, 4, 5, 10, 20, 1291, 2582, 5164, 6455, 8089, 12910, 16178, 25820, 32356, 40445, 80890, 161780, 10442899, 20885798, 41771596, 52214495, 104428990, 208857980]

約数ペア:

[(1, 208857980), (2, 104428990), (4, 52214495), (5, 41771596), (10, 20885798), (20, 10442899), (1291, 161780), (2582, 80890), (5164, 40445), (6455, 32356), (8089, 25820), (12910, 16178)]