2138406910

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{549719}}^1$

素因数の和:550115

約数の個数: 16

約数和(自身を含む): 3859034400

約数和(自身を除く): 1720627490

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 549719, 1099438, 2748595, 5497190, 213840691, 427681382, 1069203455, 2138406910]

約数ペア:

[(1, 2138406910), (2, 1069203455), (5, 427681382), (10, 213840691), (389, 5497190), (778, 2748595), (1945, 1099438), (3890, 549719)]