21481005

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15737}}^1$

素因数の和:15765

約数の個数: 32

約数和(自身を含む): 42303744

約数和(自身を除く): 20822739

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15737, 47211, 78685, 110159, 204581, 236055, 330477, 550795, 613743, 1022905, 1432067, 1652385, 3068715, 4296201, 7160335, 21481005]

約数ペア:

[(1, 21481005), (3, 7160335), (5, 4296201), (7, 3068715), (13, 1652385), (15, 1432067), (21, 1022905), (35, 613743), (39, 550795), (65, 330477), (91, 236055), (105, 204581), (195, 110159), (273, 78685), (455, 47211), (1365, 15737)]