20915763

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1621}}^1$

素因数の和:1675

約数の個数: 32

約数和(自身を含む): 33633792

約数和(自身を除く): 12718029

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 187, 253, 391, 561, 759, 1173, 1621, 4301, 4863, 12903, 17831, 27557, 37283, 53493, 82671, 111849, 303127, 410113, 633811, 909381, 1230339, 1901433, 6971921, 20915763]

約数ペア:

[(1, 20915763), (3, 6971921), (11, 1901433), (17, 1230339), (23, 909381), (33, 633811), (51, 410113), (69, 303127), (187, 111849), (253, 82671), (391, 53493), (561, 37283), (759, 27557), (1173, 17831), (1621, 12903), (4301, 4863)]