21536385

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{617}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 37376640

約数和(自身を除く): 15840255

約数列:

[1, 3, 5, 13, 15, 39, 65, 179, 195, 537, 617, 895, 1851, 2327, 2685, 3085, 6981, 8021, 9255, 11635, 24063, 34905, 40105, 110443, 120315, 331329, 552215, 1435759, 1656645, 4307277, 7178795, 21536385]

約数ペア:

[(1, 21536385), (3, 7178795), (5, 4307277), (13, 1656645), (15, 1435759), (39, 552215), (65, 331329), (179, 120315), (195, 110443), (537, 40105), (617, 34905), (895, 24063), (1851, 11635), (2327, 9255), (2685, 8021), (3085, 6981)]