389618404

素因数分解:

$2^2\times 7^2\times {\mathrm{1987849}}^1$

素因数の和:1987867

約数の個数: 18

約数和(自身を含む): 793152150

約数和(自身を除く): 403533746

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 1987849, 3975698, 7951396, 13914943, 27829886, 55659772, 97404601, 194809202, 389618404]

約数ペア:

[(1, 389618404), (2, 194809202), (4, 97404601), (7, 55659772), (14, 27829886), (28, 13914943), (49, 7951396), (98, 3975698), (196, 1987849)]