2559640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{719}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 5832000

約数和(自身を除く): 3272360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 719, 890, 1438, 1780, 2876, 3560, 3595, 5752, 7190, 14380, 28760, 63991, 127982, 255964, 319955, 511928, 639910, 1279820, 2559640]

約数ペア:

[(1, 2559640), (2, 1279820), (4, 639910), (5, 511928), (8, 319955), (10, 255964), (20, 127982), (40, 63991), (89, 28760), (178, 14380), (356, 7190), (445, 5752), (712, 3595), (719, 3560), (890, 2876), (1438, 1780)]