20321560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72577}}^1$

素因数の和:72595

約数の個数: 32

約数和(自身を含む): 52256160

約数和(自身を除く): 31934600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72577, 145154, 290308, 362885, 508039, 580616, 725770, 1016078, 1451540, 2032156, 2540195, 2903080, 4064312, 5080390, 10160780, 20321560]

約数ペア:

[(1, 20321560), (2, 10160780), (4, 5080390), (5, 4064312), (7, 2903080), (8, 2540195), (10, 2032156), (14, 1451540), (20, 1016078), (28, 725770), (35, 580616), (40, 508039), (56, 362885), (70, 290308), (140, 145154), (280, 72577)]