20674615

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 27537840

約数和(自身を除く): 6863225

約数列:

[1, 5, 13, 43, 65, 169, 215, 559, 569, 845, 2795, 2845, 7267, 7397, 24467, 36335, 36985, 96161, 122335, 318071, 480805, 1590355, 4134923, 20674615]

約数ペア:

[(1, 20674615), (5, 4134923), (13, 1590355), (43, 480805), (65, 318071), (169, 122335), (215, 96161), (559, 36985), (569, 36335), (845, 24467), (2795, 7397), (2845, 7267)]