18660237

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 27574272

約数和(自身を除く): 8914035

約数列:

[1, 3, 17, 43, 51, 67, 127, 129, 201, 381, 731, 1139, 2159, 2193, 2881, 3417, 5461, 6477, 8509, 8643, 16383, 25527, 48977, 92837, 144653, 146931, 278511, 365887, 433959, 1097661, 6220079, 18660237]

約数ペア:

[(1, 18660237), (3, 6220079), (17, 1097661), (43, 433959), (51, 365887), (67, 278511), (127, 146931), (129, 144653), (201, 92837), (381, 48977), (731, 25527), (1139, 16383), (2159, 8643), (2193, 8509), (2881, 6477), (3417, 5461)]