21293199

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{1321}}^1$

素因数の和:1532

約数の個数: 20

約数和(自身を含む): 31992400

約数和(自身を除く): 10699201

約数列:

[1, 3, 9, 27, 81, 199, 597, 1321, 1791, 3963, 5373, 11889, 16119, 35667, 107001, 262879, 788637, 2365911, 7097733, 21293199]

約数ペア:

[(1, 21293199), (3, 7097733), (9, 2365911), (27, 788637), (81, 262879), (199, 107001), (597, 35667), (1321, 16119), (1791, 11889), (3963, 5373)]