20021071

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{359}}^1$

素因数の和:654

約数の個数: 16

約数和(自身を含む): 23777280

約数和(自身を除く): 3756209

約数列:

[1, 7, 31, 217, 257, 359, 1799, 2513, 7967, 11129, 55769, 77903, 92263, 645841, 2860153, 20021071]

約数ペア:

[(1, 20021071), (7, 2860153), (31, 645841), (217, 92263), (257, 77903), (359, 55769), (1799, 11129), (2513, 7967)]