18865215

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3301}}^1$

素因数の和:3439

約数の個数: 24

約数和(自身を含む): 32967168

約数和(自身を除く): 14101953

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3301, 5715, 9903, 16505, 29709, 49515, 148545, 419227, 1257681, 2096135, 3773043, 6288405, 18865215]

約数ペア:

[(1, 18865215), (3, 6288405), (5, 3773043), (9, 2096135), (15, 1257681), (45, 419227), (127, 148545), (381, 49515), (635, 29709), (1143, 16505), (1905, 9903), (3301, 5715)]