21067533

素因数分解:

$3^4\times {\mathrm{199}}^1\times {\mathrm{1307}}^1$

素因数の和:1518

約数の個数: 20

約数和(自身を含む): 31653600

約数和(自身を除く): 10586067

約数列:

[1, 3, 9, 27, 81, 199, 597, 1307, 1791, 3921, 5373, 11763, 16119, 35289, 105867, 260093, 780279, 2340837, 7022511, 21067533]

約数ペア:

[(1, 21067533), (3, 7022511), (9, 2340837), (27, 780279), (81, 260093), (199, 105867), (597, 35289), (1307, 16119), (1791, 11763), (3921, 5373)]