209220560

素因数分解:

$2^4\times 5^1\times {\mathrm{2615257}}^1$

素因数の和:2615270

約数の個数: 20

約数和(自身を含む): 486437988

約数和(自身を除く): 277217428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2615257, 5230514, 10461028, 13076285, 20922056, 26152570, 41844112, 52305140, 104610280, 209220560]

約数ペア:

[(1, 209220560), (2, 104610280), (4, 52305140), (5, 41844112), (8, 26152570), (10, 20922056), (16, 13076285), (20, 10461028), (40, 5230514), (80, 2615257)]