18990280

素因数分解:

$2^3\times 5^1\times {\mathrm{474757}}^1$

素因数の和:474768

約数の個数: 16

約数和(自身を含む): 42728220

約数和(自身を除く): 23737940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 474757, 949514, 1899028, 2373785, 3798056, 4747570, 9495140, 18990280]

約数ペア:

[(1, 18990280), (2, 9495140), (4, 4747570), (5, 3798056), (8, 2373785), (10, 1899028), (20, 949514), (40, 474757)]