21188115

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12073}}^1$

素因数の和:12100

約数の個数: 32

約数和(自身を含む): 40568640

約数和(自身を除く): 19380525

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 12073, 36219, 60365, 108657, 156949, 181095, 325971, 470847, 543285, 784745, 1412541, 1629855, 2354235, 4237623, 7062705, 21188115]

約数ペア:

[(1, 21188115), (3, 7062705), (5, 4237623), (9, 2354235), (13, 1629855), (15, 1412541), (27, 784745), (39, 543285), (45, 470847), (65, 325971), (117, 181095), (135, 156949), (195, 108657), (351, 60365), (585, 36219), (1755, 12073)]