639076978

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{25763}}^1$

素因数の和:26001

約数の個数: 16

約数和(自身を含む): 976970880

約数和(自身を除く): 337893902

約数列:

[1, 2, 79, 157, 158, 314, 12403, 24806, 25763, 51526, 2035277, 4044791, 4070554, 8089582, 319538489, 639076978]

約数ペア:

[(1, 639076978), (2, 319538489), (79, 8089582), (157, 4070554), (158, 4044791), (314, 2035277), (12403, 51526), (24806, 25763)]