21445150

素因数分解:

$2^1\times 5^2\times {\mathrm{439}}^1\times {\mathrm{977}}^1$

素因数の和:1428

約数の個数: 24

約数和(自身を含む): 40019760

約数和(自身を除く): 18574610

約数列:

[1, 2, 5, 10, 25, 50, 439, 878, 977, 1954, 2195, 4390, 4885, 9770, 10975, 21950, 24425, 48850, 428903, 857806, 2144515, 4289030, 10722575, 21445150]

約数ペア:

[(1, 21445150), (2, 10722575), (5, 4289030), (10, 2144515), (25, 857806), (50, 428903), (439, 48850), (878, 24425), (977, 21950), (1954, 10975), (2195, 9770), (4390, 4885)]