20665795

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6571}}^1$

素因数の和:6630

約数の個数: 16

約数和(自身を含む): 26971488

約数和(自身を除く): 6305693

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6571, 32855, 111707, 243127, 558535, 1215635, 4133159, 20665795]

約数ペア:

[(1, 20665795), (5, 4133159), (17, 1215635), (37, 558535), (85, 243127), (185, 111707), (629, 32855), (3145, 6571)]