321980728

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{398491}}^1$

素因数の和:398598

約数の個数: 16

約数和(自身を含む): 609692760

約数和(自身を除く): 287712032

約数列:

[1, 2, 4, 8, 101, 202, 404, 808, 398491, 796982, 1593964, 3187928, 40247591, 80495182, 160990364, 321980728]

約数ペア:

[(1, 321980728), (2, 160990364), (4, 80495182), (8, 40247591), (101, 3187928), (202, 1593964), (404, 796982), (808, 398491)]