21258135

素因数分解:

$3^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1091}}^1$

素因数の和:1535

約数の個数: 24

約数和(自身を含む): 36966384

約数和(自身を除く): 15708249

約数列:

[1, 3, 5, 9, 15, 45, 433, 1091, 1299, 2165, 3273, 3897, 5455, 6495, 9819, 16365, 19485, 49095, 472403, 1417209, 2362015, 4251627, 7086045, 21258135]

約数ペア:

[(1, 21258135), (3, 7086045), (5, 4251627), (9, 2362015), (15, 1417209), (45, 472403), (433, 49095), (1091, 19485), (1299, 16365), (2165, 9819), (3273, 6495), (3897, 5455)]