639052666

素因数分解:

$2^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{333187}}^1$

素因数の和:333333

約数の個数: 16

約数和(自身を含む): 1103518656

約数和(自身を除く): 464465990

約数列:

[1, 2, 7, 14, 137, 274, 959, 1918, 333187, 666374, 2332309, 4664618, 45646619, 91293238, 319526333, 639052666]

約数ペア:

[(1, 639052666), (2, 319526333), (7, 91293238), (14, 45646619), (137, 4664618), (274, 2332309), (959, 666374), (1918, 333187)]