21072393

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11311}}^1$

素因数の和:11346

約数の個数: 20

約数和(自身を含む): 32850048

約数和(自身を除く): 11777655

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11311, 33933, 101799, 260153, 305397, 780459, 916191, 2341377, 7024131, 21072393]

約数ペア:

[(1, 21072393), (3, 7024131), (9, 2341377), (23, 916191), (27, 780459), (69, 305397), (81, 260153), (207, 101799), (621, 33933), (1863, 11311)]