28389383

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{101}}^2$

素因数の和:247

約数の個数: 18

約数和(自身を含む): 32887176

約数和(自身を除く): 4497793

約数列:

[1, 11, 23, 101, 121, 253, 1111, 2323, 2783, 10201, 12221, 25553, 112211, 234623, 281083, 1234321, 2580853, 28389383]

約数ペア:

[(1, 28389383), (11, 2580853), (23, 1234321), (101, 281083), (121, 234623), (253, 112211), (1111, 25553), (2323, 12221), (2783, 10201)]