20168860

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5119}}^1$

素因数の和:5325

約数の個数: 24

約数和(自身を含む): 42577920

約数和(自身を除く): 22409060

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 5119, 10238, 20476, 25595, 51190, 102380, 1008443, 2016886, 4033772, 5042215, 10084430, 20168860]

約数ペア:

[(1, 20168860), (2, 10084430), (4, 5042215), (5, 4033772), (10, 2016886), (20, 1008443), (197, 102380), (394, 51190), (788, 25595), (985, 20476), (1970, 10238), (3940, 5119)]