19813003

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 24295680

約数和(自身を除く): 4482677

約数列:

[1, 7, 29, 49, 73, 191, 203, 511, 1337, 1421, 2117, 3577, 5539, 9359, 13943, 14819, 38773, 97601, 103733, 271411, 404347, 683207, 2830429, 19813003]

約数ペア:

[(1, 19813003), (7, 2830429), (29, 683207), (49, 404347), (73, 271411), (191, 103733), (203, 97601), (511, 38773), (1337, 14819), (1421, 13943), (2117, 9359), (3577, 5539)]