18723711

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{397}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 25472000

約数和(自身を除く): 6748289

約数列:

[1, 3, 79, 199, 237, 397, 597, 1191, 15721, 31363, 47163, 79003, 94089, 237009, 6241237, 18723711]

約数ペア:

[(1, 18723711), (3, 6241237), (79, 237009), (199, 94089), (237, 79003), (397, 47163), (597, 31363), (1191, 15721)]