6641890

素因数分解:

$2^1\times 5^1\times {\mathrm{809}}^1\times {\mathrm{821}}^1$

素因数の和:1637

約数の個数: 16

約数和(自身を含む): 11984760

約数和(自身を除く): 5342870

約数列:

[1, 2, 5, 10, 809, 821, 1618, 1642, 4045, 4105, 8090, 8210, 664189, 1328378, 3320945, 6641890]

約数ペア:

[(1, 6641890), (2, 3320945), (5, 1328378), (10, 664189), (809, 8210), (821, 8090), (1618, 4105), (1642, 4045)]