17957961

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1010

約数の個数: 36

約数和(自身を含む): 30908592

約数和(自身を除く): 12950631

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 947, 2107, 2709, 2841, 6321, 6629, 8523, 18963, 19887, 40721, 46403, 59661, 122163, 139209, 285047, 366489, 417627, 855141, 1995329, 2565423, 5985987, 17957961]

約数ペア:

[(1, 17957961), (3, 5985987), (7, 2565423), (9, 1995329), (21, 855141), (43, 417627), (49, 366489), (63, 285047), (129, 139209), (147, 122163), (301, 59661), (387, 46403), (441, 40721), (903, 19887), (947, 18963), (2107, 8523), (2709, 6629), (2841, 6321)]