1288970

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:985

約数の個数: 16

約数和(自身を含む): 2337768

約数和(自身を除く): 1048798

約数列:

[1, 2, 5, 10, 157, 314, 785, 821, 1570, 1642, 4105, 8210, 128897, 257794, 644485, 1288970]

約数ペア:

[(1, 1288970), (2, 644485), (5, 257794), (10, 128897), (157, 8210), (314, 4105), (785, 1642), (821, 1570)]