209904317

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{6959}}^1$

素因数の和:7136

約数の個数: 16

約数和(自身を含む): 249446400

約数和(自身を除く): 39542083

約数列:

[1, 7, 31, 139, 217, 973, 4309, 6959, 30163, 48713, 215729, 967301, 1510103, 6771107, 29986331, 209904317]

約数ペア:

[(1, 209904317), (7, 29986331), (31, 6771107), (139, 1510103), (217, 967301), (973, 215729), (4309, 48713), (6959, 30163)]