12990280

素因数分解:

$2^3\times 5^1\times {\mathrm{324757}}^1$

素因数の和:324768

約数の個数: 16

約数和(自身を含む): 29228220

約数和(自身を除く): 16237940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 324757, 649514, 1299028, 1623785, 2598056, 3247570, 6495140, 12990280]

約数ペア:

[(1, 12990280), (2, 6495140), (4, 3247570), (5, 2598056), (8, 1623785), (10, 1299028), (20, 649514), (40, 324757)]