25890440

素因数分解:

$2^3\times 5^1\times {\mathrm{647261}}^1$

素因数の和:647272

約数の個数: 16

約数和(自身を含む): 58253580

約数和(自身を除く): 32363140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647261, 1294522, 2589044, 3236305, 5178088, 6472610, 12945220, 25890440]

約数ペア:

[(1, 25890440), (2, 12945220), (4, 6472610), (5, 5178088), (8, 3236305), (10, 2589044), (20, 1294522), (40, 647261)]