257524120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{919729}}^1$

素因数の和:919747

約数の個数: 32

約数和(自身を含む): 662205600

約数和(自身を除く): 404681480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 919729, 1839458, 3678916, 4598645, 6438103, 7357832, 9197290, 12876206, 18394580, 25752412, 32190515, 36789160, 51504824, 64381030, 128762060, 257524120]

約数ペア:

[(1, 257524120), (2, 128762060), (4, 64381030), (5, 51504824), (7, 36789160), (8, 32190515), (10, 25752412), (14, 18394580), (20, 12876206), (28, 9197290), (35, 7357832), (40, 6438103), (56, 4598645), (70, 3678916), (140, 1839458), (280, 919729)]