19627480

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{907}}^1$

素因数の和:1459

約数の個数: 32

約数和(自身を含む): 44292240

約数和(自身を除く): 24664760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 907, 1082, 1814, 2164, 2705, 3628, 4328, 4535, 5410, 7256, 9070, 10820, 18140, 21640, 36280, 490687, 981374, 1962748, 2453435, 3925496, 4906870, 9813740, 19627480]

約数ペア:

[(1, 19627480), (2, 9813740), (4, 4906870), (5, 3925496), (8, 2453435), (10, 1962748), (20, 981374), (40, 490687), (541, 36280), (907, 21640), (1082, 18140), (1814, 10820), (2164, 9070), (2705, 7256), (3628, 5410), (4328, 4535)]