2160380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{991}}^1$

素因数の和:1109

約数の個数: 24

約数和(自身を含む): 4583040

約数和(自身を除く): 2422660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 991, 1090, 1982, 2180, 3964, 4955, 9910, 19820, 108019, 216038, 432076, 540095, 1080190, 2160380]

約数ペア:

[(1, 2160380), (2, 1080190), (4, 540095), (5, 432076), (10, 216038), (20, 108019), (109, 19820), (218, 9910), (436, 4955), (545, 3964), (991, 2180), (1090, 1982)]