21185283

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 13029117

約数列:

[1, 3, 7, 21, 29, 43, 87, 129, 203, 301, 609, 809, 903, 1247, 2427, 3741, 5663, 8729, 16989, 23461, 26187, 34787, 70383, 104361, 164227, 243509, 492681, 730527, 1008823, 3026469, 7061761, 21185283]

約数ペア:

[(1, 21185283), (3, 7061761), (7, 3026469), (21, 1008823), (29, 730527), (43, 492681), (87, 243509), (129, 164227), (203, 104361), (301, 70383), (609, 34787), (809, 26187), (903, 23461), (1247, 16989), (2427, 8729), (3741, 5663)]