12557680

素因数分解:

$2^4\times 5^1\times {\mathrm{156971}}^1$

素因数の和:156984

約数の個数: 20

約数和(自身を含む): 29196792

約数和(自身を除く): 16639112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 156971, 313942, 627884, 784855, 1255768, 1569710, 2511536, 3139420, 6278840, 12557680]

約数ペア:

[(1, 12557680), (2, 6278840), (4, 3139420), (5, 2511536), (8, 1569710), (10, 1255768), (16, 784855), (20, 627884), (40, 313942), (80, 156971)]