20657295

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9001}}^1$

素因数の和:9032

約数の個数: 32

約数和(自身を含む): 38888640

約数和(自身を除く): 18231345

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9001, 27003, 45005, 81009, 135015, 153017, 243027, 405045, 459051, 765085, 1215135, 1377153, 2295255, 4131459, 6885765, 20657295]

約数ペア:

[(1, 20657295), (3, 6885765), (5, 4131459), (9, 2295255), (15, 1377153), (17, 1215135), (27, 765085), (45, 459051), (51, 405045), (85, 243027), (135, 153017), (153, 135015), (255, 81009), (459, 45005), (765, 27003), (2295, 9001)]