13408039780

素因数分解:

$2^2\times 5^1\times {\mathrm{670401989}}^1$

素因数の和:670401998

約数の個数: 12

約数和(自身を含む): 28156883580

約数和(自身を除く): 14748843800

約数列:

[1, 2, 4, 5, 10, 20, 670401989, 1340803978, 2681607956, 3352009945, 6704019890, 13408039780]

約数ペア:

[(1, 13408039780), (2, 6704019890), (4, 3352009945), (5, 2681607956), (10, 1340803978), (20, 670401989)]