217880523

素因数分解:

$3^4\times 7^1\times {\mathrm{199}}^1\times {\mathrm{1931}}^1$

素因数の和:2149

約数の個数: 40

約数和(自身を含む): 374035200

約数和(自身を除く): 156154677

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 199, 567, 597, 1393, 1791, 1931, 4179, 5373, 5793, 12537, 13517, 16119, 17379, 37611, 40551, 52137, 112833, 121653, 156411, 364959, 384269, 1094877, 1152807, 2689883, 3458421, 8069649, 10375263, 24208947, 31125789, 72626841, 217880523]

約数ペア:

[(1, 217880523), (3, 72626841), (7, 31125789), (9, 24208947), (21, 10375263), (27, 8069649), (63, 3458421), (81, 2689883), (189, 1152807), (199, 1094877), (567, 384269), (597, 364959), (1393, 156411), (1791, 121653), (1931, 112833), (4179, 52137), (5373, 40551), (5793, 37611), (12537, 17379), (13517, 16119)]