28771695

素因数分解:

$3^2\times 5^1\times {\mathrm{639371}}^1$

素因数の和:639382

約数の個数: 12

約数和(自身を含む): 49871016

約数和(自身を除く): 21099321

約数列:

[1, 3, 5, 9, 15, 45, 639371, 1918113, 3196855, 5754339, 9590565, 28771695]

約数ペア:

[(1, 28771695), (3, 9590565), (5, 5754339), (9, 3196855), (15, 1918113), (45, 639371)]