2788220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1279}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 5913600

約数和(自身を除く): 3125380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 1279, 2180, 2558, 5116, 6395, 12790, 25580, 139411, 278822, 557644, 697055, 1394110, 2788220]

約数ペア:

[(1, 2788220), (2, 1394110), (4, 697055), (5, 557644), (10, 278822), (20, 139411), (109, 25580), (218, 12790), (436, 6395), (545, 5116), (1090, 2558), (1279, 2180)]