18006723

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 72

約数和(自身を含む): 33715968

約数和(自身を除く): 15709245

約数列:

[1, 3, 7, 9, 17, 21, 23, 43, 51, 63, 69, 119, 129, 153, 161, 207, 289, 301, 357, 387, 391, 483, 731, 867, 903, 989, 1071, 1173, 1449, 2023, 2193, 2601, 2709, 2737, 2967, 3519, 5117, 6069, 6579, 6647, 6923, 8211, 8901, 12427, 15351, 16813, 18207, 19941, 20769, 24633, 37281, 46053, 46529, 50439, 59823, 62307, 86989, 111843, 117691, 139587, 151317, 260967, 285821, 353073, 418761, 782901, 857463, 1059219, 2000747, 2572389, 6002241, 18006723]

約数ペア:

[(1, 18006723), (3, 6002241), (7, 2572389), (9, 2000747), (17, 1059219), (21, 857463), (23, 782901), (43, 418761), (51, 353073), (63, 285821), (69, 260967), (119, 151317), (129, 139587), (153, 117691), (161, 111843), (207, 86989), (289, 62307), (301, 59823), (357, 50439), (387, 46529), (391, 46053), (483, 37281), (731, 24633), (867, 20769), (903, 19941), (989, 18207), (1071, 16813), (1173, 15351), (1449, 12427), (2023, 8901), (2193, 8211), (2601, 6923), (2709, 6647), (2737, 6579), (2967, 6069), (3519, 5117)]