78801280520

素因数分解:

$2^3\times 5^1\times {\mathrm{1970032013}}^1$

素因数の和:1970032024

約数の個数: 16

約数和(自身を含む): 177302881260

約数和(自身を除く): 98501600740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1970032013, 3940064026, 7880128052, 9850160065, 15760256104, 19700320130, 39400640260, 78801280520]

約数ペア:

[(1, 78801280520), (2, 39400640260), (4, 19700320130), (5, 15760256104), (8, 9850160065), (10, 7880128052), (20, 3940064026), (40, 1970032013)]