28191961

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 33193600

約数和(自身を除く): 5001639

約数列:

[1, 7, 43, 229, 301, 409, 1603, 2863, 9847, 17587, 68929, 93661, 123109, 655627, 4027423, 28191961]

約数ペア:

[(1, 28191961), (7, 4027423), (43, 655627), (229, 123109), (301, 93661), (409, 68929), (1603, 17587), (2863, 9847)]