51217660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{196991}}^1$

素因数の和:197013

約数の個数: 24

約数和(自身を含む): 115831296

約数和(自身を除く): 64613636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 196991, 393982, 787964, 984955, 1969910, 2560883, 3939820, 5121766, 10243532, 12804415, 25608830, 51217660]

約数ペア:

[(1, 51217660), (2, 25608830), (4, 12804415), (5, 10243532), (10, 5121766), (13, 3939820), (20, 2560883), (26, 1969910), (52, 984955), (65, 787964), (130, 393982), (260, 196991)]