640081554

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{15240037}}^1$

素因数の和:15240049

約数の個数: 16

約数和(自身を含む): 1463043648

約数和(自身を除く): 822962094

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 15240037, 30480074, 45720111, 91440222, 106680259, 213360518, 320040777, 640081554]

約数ペア:

[(1, 640081554), (2, 320040777), (3, 213360518), (6, 106680259), (7, 91440222), (14, 45720111), (21, 30480074), (42, 15240037)]