19209925

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3541}}^1$

素因数の和:3589

約数の個数: 24

約数和(自身を含む): 28109312

約数和(自身を除く): 8899387

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 3541, 5425, 17705, 24787, 88525, 109771, 123935, 548855, 619675, 768397, 2744275, 3841985, 19209925]

約数ペア:

[(1, 19209925), (5, 3841985), (7, 2744275), (25, 768397), (31, 619675), (35, 548855), (155, 123935), (175, 109771), (217, 88525), (775, 24787), (1085, 17705), (3541, 5425)]