2048780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1151}}^1$

素因数の和:1249

約数の個数: 24

約数和(自身を含む): 4354560

約数和(自身を除く): 2305780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1151, 1780, 2302, 4604, 5755, 11510, 23020, 102439, 204878, 409756, 512195, 1024390, 2048780]

約数ペア:

[(1, 2048780), (2, 1024390), (4, 512195), (5, 409756), (10, 204878), (20, 102439), (89, 23020), (178, 11510), (356, 5755), (445, 4604), (890, 2302), (1151, 1780)]