20993709

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{21937}}^1$

素因数の和:21980

約数の個数: 16

約数和(自身を含む): 31590720

約数和(自身を除く): 10597011

約数列:

[1, 3, 11, 29, 33, 87, 319, 957, 21937, 65811, 241307, 636173, 723921, 1908519, 6997903, 20993709]

約数ペア:

[(1, 20993709), (3, 6997903), (11, 1908519), (29, 723921), (33, 636173), (87, 241307), (319, 65811), (957, 21937)]