20975420

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2389}}^1$

素因数の和:2837

約数の個数: 24

約数和(自身を含む): 44167200

約数和(自身を除く): 23191780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2389, 4390, 4778, 8780, 9556, 11945, 23890, 47780, 1048771, 2097542, 4195084, 5243855, 10487710, 20975420]

約数ペア:

[(1, 20975420), (2, 10487710), (4, 5243855), (5, 4195084), (10, 2097542), (20, 1048771), (439, 47780), (878, 23890), (1756, 11945), (2195, 9556), (2389, 8780), (4390, 4778)]