15880520

素因数分解:

$2^3\times 5^1\times {\mathrm{397013}}^1$

素因数の和:397024

約数の個数: 16

約数和(自身を含む): 35731260

約数和(自身を除く): 19850740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397013, 794026, 1588052, 1985065, 3176104, 3970130, 7940260, 15880520]

約数ペア:

[(1, 15880520), (2, 7940260), (4, 3970130), (5, 3176104), (8, 1985065), (10, 1588052), (20, 794026), (40, 397013)]