139989983

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 173792256

約数和(自身を除く): 33802273

約数列:

[1, 7, 23, 43, 73, 161, 277, 301, 511, 989, 1679, 1939, 3139, 6371, 6923, 11753, 11911, 20221, 21973, 44597, 72197, 83377, 141547, 273953, 465083, 505379, 869503, 1917671, 3255581, 6086521, 19998569, 139989983]

約数ペア:

[(1, 139989983), (7, 19998569), (23, 6086521), (43, 3255581), (73, 1917671), (161, 869503), (277, 505379), (301, 465083), (511, 273953), (989, 141547), (1679, 83377), (1939, 72197), (3139, 44597), (6371, 21973), (6923, 20221), (11753, 11911)]