138691021

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 170496000

約数和(自身を除く): 31804979

約数列:

[1, 7, 29, 49, 73, 191, 203, 343, 511, 1337, 1421, 2117, 3577, 5539, 9359, 9947, 13943, 14819, 25039, 38773, 65513, 97601, 103733, 271411, 404347, 683207, 726131, 1899877, 2830429, 4782449, 19813003, 138691021]

約数ペア:

[(1, 138691021), (7, 19813003), (29, 4782449), (49, 2830429), (73, 1899877), (191, 726131), (203, 683207), (343, 404347), (511, 271411), (1337, 103733), (1421, 97601), (2117, 65513), (3577, 38773), (5539, 25039), (9359, 14819), (9947, 13943)]