639127282

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{121001}}^1$

素因数の和:121161

約数の個数: 16

約数和(自身を含む): 1016416800

約数和(自身を除く): 377289518

約数列:

[1, 2, 19, 38, 139, 278, 2641, 5282, 121001, 242002, 2299019, 4598038, 16819139, 33638278, 319563641, 639127282]

約数ペア:

[(1, 639127282), (2, 319563641), (19, 33638278), (38, 16819139), (139, 4598038), (278, 2299019), (2641, 242002), (5282, 121001)]