67721356

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{349}}^2$

素因数の和:841

約数の個数: 18

約数和(自身を含む): 119707980

約数和(自身を除く): 51986624

約数列:

[1, 2, 4, 139, 278, 349, 556, 698, 1396, 48511, 97022, 121801, 194044, 243602, 487204, 16930339, 33860678, 67721356]

約数ペア:

[(1, 67721356), (2, 33860678), (4, 16930339), (139, 487204), (278, 243602), (349, 194044), (556, 121801), (698, 97022), (1396, 48511)]