28400239

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 34030080

約数和(自身を除く): 5629841

約数列:

[1, 7, 23, 161, 419, 421, 2933, 2947, 9637, 9683, 67459, 67781, 176399, 1234793, 4057177, 28400239]

約数ペア:

[(1, 28400239), (7, 4057177), (23, 1234793), (161, 176399), (419, 67781), (421, 67459), (2933, 9683), (2947, 9637)]