18487161

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 35141184

約数和(自身を除く): 16654023

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 49, 63, 77, 99, 103, 111, 147, 231, 259, 309, 333, 407, 441, 539, 693, 721, 777, 927, 1133, 1221, 1617, 1813, 2163, 2331, 2849, 3399, 3663, 3811, 4851, 5047, 5439, 6489, 7931, 8547, 10197, 11433, 15141, 16317, 19943, 23793, 25641, 26677, 34299, 41921, 45423, 55517, 59829, 71379, 80031, 125763, 166551, 179487, 186739, 240093, 293447, 377289, 499653, 560217, 880341, 1680651, 2054129, 2641023, 6162387, 18487161]

約数ペア:

[(1, 18487161), (3, 6162387), (7, 2641023), (9, 2054129), (11, 1680651), (21, 880341), (33, 560217), (37, 499653), (49, 377289), (63, 293447), (77, 240093), (99, 186739), (103, 179487), (111, 166551), (147, 125763), (231, 80031), (259, 71379), (309, 59829), (333, 55517), (407, 45423), (441, 41921), (539, 34299), (693, 26677), (721, 25641), (777, 23793), (927, 19943), (1133, 16317), (1221, 15141), (1617, 11433), (1813, 10197), (2163, 8547), (2331, 7931), (2849, 6489), (3399, 5439), (3663, 5047), (3811, 4851)]