21188265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{541}}^1$

素因数の和:929

約数の個数: 32

約数和(自身を含む): 38919936

約数和(自身を除く): 17731671

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 373, 541, 1119, 1623, 1865, 2611, 2705, 3787, 5595, 7833, 8115, 11361, 13055, 18935, 39165, 56805, 201793, 605379, 1008965, 1412551, 3026895, 4237653, 7062755, 21188265]

約数ペア:

[(1, 21188265), (3, 7062755), (5, 4237653), (7, 3026895), (15, 1412551), (21, 1008965), (35, 605379), (105, 201793), (373, 56805), (541, 39165), (1119, 18935), (1623, 13055), (1865, 11361), (2611, 8115), (2705, 7833), (3787, 5595)]