66647888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{245029}}^1$

素因数の和:245054

約数の個数: 20

約数和(自身を含む): 136726740

約数和(自身を除く): 70078852

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 245029, 490058, 980116, 1960232, 3920464, 4165493, 8330986, 16661972, 33323944, 66647888]

約数ペア:

[(1, 66647888), (2, 33323944), (4, 16661972), (8, 8330986), (16, 4165493), (17, 3920464), (34, 1960232), (68, 980116), (136, 490058), (272, 245029)]