201620560

素因数分解:

$2^4\times 5^1\times {\mathrm{2520257}}^1$

素因数の和:2520270

約数の個数: 20

約数和(自身を含む): 468767988

約数和(自身を除く): 267147428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2520257, 5040514, 10081028, 12601285, 20162056, 25202570, 40324112, 50405140, 100810280, 201620560]

約数ペア:

[(1, 201620560), (2, 100810280), (4, 50405140), (5, 40324112), (8, 25202570), (10, 20162056), (16, 12601285), (20, 10081028), (40, 5040514), (80, 2520257)]