20668005

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27017}}^1$

素因数の和:27045

約数の個数: 24

約数和(自身を含む): 37933272

約数和(自身を除く): 17265267

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 27017, 81051, 135085, 243153, 405255, 459289, 1215765, 1377867, 2296445, 4133601, 6889335, 20668005]

約数ペア:

[(1, 20668005), (3, 6889335), (5, 4133601), (9, 2296445), (15, 1377867), (17, 1215765), (45, 459289), (51, 405255), (85, 243153), (153, 135085), (255, 81051), (765, 27017)]