19680250

素因数分解:

$2^1\times 5^3\times {\mathrm{78721}}^1$

素因数の和:78738

約数の個数: 16

約数和(自身を含む): 36841896

約数和(自身を除く): 17161646

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 78721, 157442, 393605, 787210, 1968025, 3936050, 9840125, 19680250]

約数ペア:

[(1, 19680250), (2, 9840125), (5, 3936050), (10, 1968025), (25, 787210), (50, 393605), (125, 157442), (250, 78721)]