2116780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{971}}^1$

素因数の和:1089

約数の個数: 24

約数和(自身を含む): 4490640

約数和(自身を除く): 2373860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 971, 1090, 1942, 2180, 3884, 4855, 9710, 19420, 105839, 211678, 423356, 529195, 1058390, 2116780]

約数ペア:

[(1, 2116780), (2, 1058390), (4, 529195), (5, 423356), (10, 211678), (20, 105839), (109, 19420), (218, 9710), (436, 4855), (545, 3884), (971, 2180), (1090, 1942)]