205760

素因数分解:

$2^6\times 5^1\times {\mathrm{643}}^1$

素因数の和:660

約数の個数: 28

約数和(自身を含む): 490728

約数和(自身を除く): 284968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 643, 1286, 2572, 3215, 5144, 6430, 10288, 12860, 20576, 25720, 41152, 51440, 102880, 205760]

約数ペア:

[(1, 205760), (2, 102880), (4, 51440), (5, 41152), (8, 25720), (10, 20576), (16, 12860), (20, 10288), (32, 6430), (40, 5144), (64, 3215), (80, 2572), (160, 1286), (320, 643)]