281485057

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{15913}}^1$

素因数の和:15965

約数の個数: 18

約数和(自身を含む): 345604338

約数和(自身を除く): 64119281

約数列:

[1, 7, 19, 49, 133, 361, 931, 2527, 15913, 17689, 111391, 302347, 779737, 2116429, 5744593, 14815003, 40212151, 281485057]

約数ペア:

[(1, 281485057), (7, 40212151), (19, 14815003), (49, 5744593), (133, 2116429), (361, 779737), (931, 302347), (2527, 111391), (15913, 17689)]