21097011

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 32417280

約数和(自身を除く): 11320269

約数列:

[1, 3, 13, 19, 39, 57, 71, 213, 247, 401, 741, 923, 1203, 1349, 2769, 4047, 5213, 7619, 15639, 17537, 22857, 28471, 52611, 85413, 99047, 297141, 370123, 540949, 1110369, 1622847, 7032337, 21097011]

約数ペア:

[(1, 21097011), (3, 7032337), (13, 1622847), (19, 1110369), (39, 540949), (57, 370123), (71, 297141), (213, 99047), (247, 85413), (401, 52611), (741, 28471), (923, 22857), (1203, 17537), (1349, 15639), (2769, 7619), (4047, 5213)]