40001960

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2833}}^1$

素因数の和:3197

約数の個数: 32

約数和(自身を含む): 90291240

約数和(自身を除く): 50289280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 2833, 3530, 5666, 7060, 11332, 14120, 14165, 22664, 28330, 56660, 113320, 1000049, 2000098, 4000196, 5000245, 8000392, 10000490, 20000980, 40001960]

約数ペア:

[(1, 40001960), (2, 20000980), (4, 10000490), (5, 8000392), (8, 5000245), (10, 4000196), (20, 2000098), (40, 1000049), (353, 113320), (706, 56660), (1412, 28330), (1765, 22664), (2824, 14165), (2833, 14120), (3530, 11332), (5666, 7060)]