21579159

素因数分解:

$3^1\times 7^3\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 34163200

約数和(自身を除く): 12584041

約数列:

[1, 3, 7, 21, 49, 67, 147, 201, 313, 343, 469, 939, 1029, 1407, 2191, 3283, 6573, 9849, 15337, 20971, 22981, 46011, 62913, 68943, 107359, 146797, 322077, 440391, 1027579, 3082737, 7193053, 21579159]

約数ペア:

[(1, 21579159), (3, 7193053), (7, 3082737), (21, 1027579), (49, 440391), (67, 322077), (147, 146797), (201, 107359), (313, 68943), (343, 62913), (469, 46011), (939, 22981), (1029, 20971), (1407, 15337), (2191, 9849), (3283, 6573)]