7980456940

素因数分解:

$2^2\times 5^1\times {\mathrm{399022847}}^1$

素因数の和:399022856

約数の個数: 12

約数和(自身を含む): 16758959616

約数和(自身を除く): 8778502676

約数列:

[1, 2, 4, 5, 10, 20, 399022847, 798045694, 1596091388, 1995114235, 3990228470, 7980456940]

約数ペア:

[(1, 7980456940), (2, 3990228470), (4, 1995114235), (5, 1596091388), (10, 798045694), (20, 399022847)]