1289771635

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{991}}^1\times {\mathrm{1987}}^1$

素因数の和:3114

約数の個数: 16

約数和(自身を含む): 1561900032

約数和(自身を除く): 272128397

約数列:

[1, 5, 131, 655, 991, 1987, 4955, 9935, 129821, 260297, 649105, 1301485, 1969117, 9845585, 257954327, 1289771635]

約数ペア:

[(1, 1289771635), (5, 257954327), (131, 9845585), (655, 1969117), (991, 1301485), (1987, 649105), (4955, 260297), (9935, 129821)]