20802140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{28111}}^1$

素因数の和:28157

約数の個数: 24

約数和(自身を含む): 44866752

約数和(自身を除く): 24064612

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 28111, 56222, 112444, 140555, 281110, 562220, 1040107, 2080214, 4160428, 5200535, 10401070, 20802140]

約数ペア:

[(1, 20802140), (2, 10401070), (4, 5200535), (5, 4160428), (10, 2080214), (20, 1040107), (37, 562220), (74, 281110), (148, 140555), (185, 112444), (370, 56222), (740, 28111)]