21045400

素因数分解:

$2^3\times 5^2\times {\mathrm{105227}}^1$

素因数の和:105243

約数の個数: 24

約数和(自身を含む): 48931020

約数和(自身を除く): 27885620

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105227, 210454, 420908, 526135, 841816, 1052270, 2104540, 2630675, 4209080, 5261350, 10522700, 21045400]

約数ペア:

[(1, 21045400), (2, 10522700), (4, 5261350), (5, 4209080), (8, 2630675), (10, 2104540), (20, 1052270), (25, 841816), (40, 526135), (50, 420908), (100, 210454), (200, 105227)]