13257520

素因数分解:

$2^4\times 5^1\times {\mathrm{165719}}^1$

素因数の和:165732

約数の個数: 20

約数和(自身を含む): 30823920

約数和(自身を除く): 17566400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 165719, 331438, 662876, 828595, 1325752, 1657190, 2651504, 3314380, 6628760, 13257520]

約数ペア:

[(1, 13257520), (2, 6628760), (4, 3314380), (5, 2651504), (8, 1657190), (10, 1325752), (16, 828595), (20, 662876), (40, 331438), (80, 165719)]