19903195

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7121}}^1$

素因数の和:7182

約数の個数: 16

約数和(自身を含む): 26322912

約数和(自身を除く): 6419717

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7121, 35605, 92573, 306203, 462865, 1531015, 3980639, 19903195]

約数ペア:

[(1, 19903195), (5, 3980639), (13, 1531015), (43, 462865), (65, 306203), (215, 92573), (559, 35605), (2795, 7121)]