20900450

素因数分解:

$2^1\times 5^2\times {\mathrm{418009}}^1$

素因数の和:418021

約数の個数: 12

約数和(自身を含む): 38874930

約数和(自身を除く): 17974480

約数列:

[1, 2, 5, 10, 25, 50, 418009, 836018, 2090045, 4180090, 10450225, 20900450]

約数ペア:

[(1, 20900450), (2, 10450225), (5, 4180090), (10, 2090045), (25, 836018), (50, 418009)]