18031987

素因数分解:

${\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:346

約数の個数: 16

約数和(自身を含む): 19456000

約数和(自身を除く): 1424013

約数列:

[1, 31, 37, 79, 199, 1147, 2449, 2923, 6169, 7363, 15721, 90613, 228253, 487351, 581677, 18031987]

約数ペア:

[(1, 18031987), (31, 581677), (37, 487351), (79, 228253), (199, 90613), (1147, 15721), (2449, 7363), (2923, 6169)]