20749605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{81371}}^1$

素因数の和:81396

約数の個数: 16

約数和(自身を含む): 35152704

約数和(自身を除く): 14403099

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 81371, 244113, 406855, 1220565, 1383307, 4149921, 6916535, 20749605]

約数ペア:

[(1, 20749605), (3, 6916535), (5, 4149921), (15, 1383307), (17, 1220565), (51, 406855), (85, 244113), (255, 81371)]