15939760

素因数分解:

$2^4\times 5^1\times {\mathrm{199247}}^1$

素因数の和:199260

約数の個数: 20

約数和(自身を含む): 37060128

約数和(自身を除く): 21120368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199247, 398494, 796988, 996235, 1593976, 1992470, 3187952, 3984940, 7969880, 15939760]

約数ペア:

[(1, 15939760), (2, 7969880), (4, 3984940), (5, 3187952), (8, 1992470), (10, 1593976), (16, 996235), (20, 796988), (40, 398494), (80, 199247)]