219911517

素因数分解:

$3^4\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1949}}^1$

素因数の和:2167

約数の個数: 40

約数和(自身を含む): 377520000

約数和(自身を除く): 157608483

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 199, 567, 597, 1393, 1791, 1949, 4179, 5373, 5847, 12537, 13643, 16119, 17541, 37611, 40929, 52623, 112833, 122787, 157869, 368361, 387851, 1105083, 1163553, 2714957, 3490659, 8144871, 10471977, 24434613, 31415931, 73303839, 219911517]

約数ペア:

[(1, 219911517), (3, 73303839), (7, 31415931), (9, 24434613), (21, 10471977), (27, 8144871), (63, 3490659), (81, 2714957), (189, 1163553), (199, 1105083), (567, 387851), (597, 368361), (1393, 157869), (1791, 122787), (1949, 112833), (4179, 52623), (5373, 40929), (5847, 37611), (12537, 17541), (13643, 16119)]