12911440

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{643}}^1$

素因数の和:907

約数の個数: 40

約数和(自身を含む): 30185568

約数和(自身を除く): 17274128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 643, 1004, 1255, 1286, 2008, 2510, 2572, 3215, 4016, 5020, 5144, 6430, 10040, 10288, 12860, 20080, 25720, 51440, 161393, 322786, 645572, 806965, 1291144, 1613930, 2582288, 3227860, 6455720, 12911440]

約数ペア:

[(1, 12911440), (2, 6455720), (4, 3227860), (5, 2582288), (8, 1613930), (10, 1291144), (16, 806965), (20, 645572), (40, 322786), (80, 161393), (251, 51440), (502, 25720), (643, 20080), (1004, 12860), (1255, 10288), (1286, 10040), (2008, 6430), (2510, 5144), (2572, 5020), (3215, 4016)]