209940560

素因数分解:

$2^4\times 5^1\times {\mathrm{2624257}}^1$

素因数の和:2624270

約数の個数: 20

約数和(自身を含む): 488111988

約数和(自身を除く): 278171428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2624257, 5248514, 10497028, 13121285, 20994056, 26242570, 41988112, 52485140, 104970280, 209940560]

約数ペア:

[(1, 209940560), (2, 104970280), (4, 52485140), (5, 41988112), (8, 26242570), (10, 20994056), (16, 13121285), (20, 10497028), (40, 5248514), (80, 2624257)]