18720770

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3361}}^1$

素因数の和:3925

約数の個数: 16

約数和(自身を含む): 33767928

約数和(自身を除く): 15047158

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 3361, 5570, 6722, 16805, 33610, 1872077, 3744154, 9360385, 18720770]

約数ペア:

[(1, 18720770), (2, 9360385), (5, 3744154), (10, 1872077), (557, 33610), (1114, 16805), (2785, 6722), (3361, 5570)]