8429780

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{809}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 17758440

約数和(自身を除く): 9328660

約数列:

[1, 2, 4, 5, 10, 20, 521, 809, 1042, 1618, 2084, 2605, 3236, 4045, 5210, 8090, 10420, 16180, 421489, 842978, 1685956, 2107445, 4214890, 8429780]

約数ペア:

[(1, 8429780), (2, 4214890), (4, 2107445), (5, 1685956), (10, 842978), (20, 421489), (521, 16180), (809, 10420), (1042, 8090), (1618, 5210), (2084, 4045), (2605, 3236)]