20940283

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 26797056

約数和(自身を除く): 5856773

約数列:

[1, 7, 13, 31, 91, 169, 217, 403, 571, 1183, 2821, 3997, 5239, 7423, 17701, 36673, 51961, 96499, 123907, 230113, 675493, 1610791, 2991469, 20940283]

約数ペア:

[(1, 20940283), (7, 2991469), (13, 1610791), (31, 675493), (91, 230113), (169, 123907), (217, 96499), (403, 51961), (571, 36673), (1183, 17701), (2821, 7423), (3997, 5239)]