16561995

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{607}}^1$

素因数の和:739

約数の個数: 32

約数和(自身を含む): 28366848

約数和(自身を除く): 11804853

約数列:

[1, 3, 5, 15, 17, 51, 85, 107, 255, 321, 535, 607, 1605, 1819, 1821, 3035, 5457, 9095, 9105, 10319, 27285, 30957, 51595, 64949, 154785, 194847, 324745, 974235, 1104133, 3312399, 5520665, 16561995]

約数ペア:

[(1, 16561995), (3, 5520665), (5, 3312399), (15, 1104133), (17, 974235), (51, 324745), (85, 194847), (107, 154785), (255, 64949), (321, 51595), (535, 30957), (607, 27285), (1605, 10319), (1819, 9105), (1821, 9095), (3035, 5457)]