127971520

素因数分解:

$2^6\times 5^1\times {\mathrm{399911}}^1$

素因数の和:399928

約数の個数: 28

約数和(自身を含む): 304732944

約数和(自身を除く): 176761424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 399911, 799822, 1599644, 1999555, 3199288, 3999110, 6398576, 7998220, 12797152, 15996440, 25594304, 31992880, 63985760, 127971520]

約数ペア:

[(1, 127971520), (2, 63985760), (4, 31992880), (5, 25594304), (8, 15996440), (10, 12797152), (16, 7998220), (20, 6398576), (32, 3999110), (40, 3199288), (64, 1999555), (80, 1599644), (160, 799822), (320, 399911)]