28281421

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10333}}^1$

素因数の和:10380

約数の個数: 16

約数和(自身を含む): 35714304

約数和(自身を除く): 7432883

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 10333, 72331, 175661, 237659, 1229627, 1663613, 4040203, 28281421]

約数ペア:

[(1, 28281421), (7, 4040203), (17, 1663613), (23, 1229627), (119, 237659), (161, 175661), (391, 72331), (2737, 10333)]