12957680

素因数分解:

$2^4\times 5^1\times {\mathrm{161971}}^1$

素因数の和:161984

約数の個数: 20

約数和(自身を含む): 30126792

約数和(自身を除く): 17169112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 161971, 323942, 647884, 809855, 1295768, 1619710, 2591536, 3239420, 6478840, 12957680]

約数ペア:

[(1, 12957680), (2, 6478840), (4, 3239420), (5, 2591536), (8, 1619710), (10, 1295768), (16, 809855), (20, 647884), (40, 323942), (80, 161971)]