254491520

素因数分解:

$2^7\times 5^1\times {\mathrm{397643}}^1$

素因数の和:397662

約数の個数: 32

約数和(自身を含む): 608395320

約数和(自身を除く): 353903800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 397643, 795286, 1590572, 1988215, 3181144, 3976430, 6362288, 7952860, 12724576, 15905720, 25449152, 31811440, 50898304, 63622880, 127245760, 254491520]

約数ペア:

[(1, 254491520), (2, 127245760), (4, 63622880), (5, 50898304), (8, 31811440), (10, 25449152), (16, 15905720), (20, 12724576), (32, 7952860), (40, 6362288), (64, 3976430), (80, 3181144), (128, 1988215), (160, 1590572), (320, 795286), (640, 397643)]