221566556

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{223}}^1\times {\mathrm{1787}}^1$

素因数の和:2153

約数の個数: 24

約数和(自身を含む): 392501760

約数和(自身を除く): 170935204

約数列:

[1, 2, 4, 139, 223, 278, 446, 556, 892, 1787, 3574, 7148, 30997, 61994, 123988, 248393, 398501, 496786, 797002, 993572, 1594004, 55391639, 110783278, 221566556]

約数ペア:

[(1, 221566556), (2, 110783278), (4, 55391639), (139, 1594004), (223, 993572), (278, 797002), (446, 496786), (556, 398501), (892, 248393), (1787, 123988), (3574, 61994), (7148, 30997)]