90157480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{321991}}^1$

素因数の和:322009

約数の個数: 32

約数和(自身を含む): 231834240

約数和(自身を除く): 141676760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 321991, 643982, 1287964, 1609955, 2253937, 2575928, 3219910, 4507874, 6439820, 9015748, 11269685, 12879640, 18031496, 22539370, 45078740, 90157480]

約数ペア:

[(1, 90157480), (2, 45078740), (4, 22539370), (5, 18031496), (7, 12879640), (8, 11269685), (10, 9015748), (14, 6439820), (20, 4507874), (28, 3219910), (35, 2575928), (40, 2253937), (56, 1609955), (70, 1287964), (140, 643982), (280, 321991)]