67778864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{249187}}^1$

素因数の和:249212

約数の個数: 20

約数和(自身を含む): 139046904

約数和(自身を除く): 71268040

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 249187, 498374, 996748, 1993496, 3986992, 4236179, 8472358, 16944716, 33889432, 67778864]

約数ペア:

[(1, 67778864), (2, 33889432), (4, 16944716), (8, 8472358), (16, 4236179), (17, 3986992), (34, 1993496), (68, 996748), (136, 498374), (272, 249187)]