21664035

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28319}}^1$

素因数の和:28347

約数の個数: 24

約数和(自身を含む): 39761280

約数和(自身を除く): 18097245

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28319, 84957, 141595, 254871, 424785, 481423, 1274355, 1444269, 2407115, 4332807, 7221345, 21664035]

約数ペア:

[(1, 21664035), (3, 7221345), (5, 4332807), (9, 2407115), (15, 1444269), (17, 1274355), (45, 481423), (51, 424785), (85, 254871), (153, 141595), (255, 84957), (765, 28319)]