81286240

素因数分解:

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

素因数の和:72599

約数の個数: 48

約数和(自身を含む): 219475872

約数和(自身を除く): 138189632

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72577, 145154, 290308, 362885, 508039, 580616, 725770, 1016078, 1161232, 1451540, 2032156, 2322464, 2540195, 2903080, 4064312, 5080390, 5806160, 8128624, 10160780, 11612320, 16257248, 20321560, 40643120, 81286240]

約数ペア:

[(1, 81286240), (2, 40643120), (4, 20321560), (5, 16257248), (7, 11612320), (8, 10160780), (10, 8128624), (14, 5806160), (16, 5080390), (20, 4064312), (28, 2903080), (32, 2540195), (35, 2322464), (40, 2032156), (56, 1451540), (70, 1161232), (80, 1016078), (112, 725770), (140, 580616), (160, 508039), (224, 362885), (280, 290308), (560, 145154), (1120, 72577)]