12457520

素因数分解:

$2^4\times 5^1\times {\mathrm{155719}}^1$

素因数の和:155732

約数の個数: 20

約数和(自身を含む): 28963920

約数和(自身を除く): 16506400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 155719, 311438, 622876, 778595, 1245752, 1557190, 2491504, 3114380, 6228760, 12457520]

約数ペア:

[(1, 12457520), (2, 6228760), (4, 3114380), (5, 2491504), (8, 1557190), (10, 1245752), (16, 778595), (20, 622876), (40, 311438), (80, 155719)]