18998469

素因数分解:

$3^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:118

約数の個数: 64

約数和(自身を含む): 34951680

約数和(自身を除く): 15953211

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 73, 81, 119, 153, 189, 219, 243, 357, 459, 511, 567, 657, 729, 1071, 1241, 1377, 1533, 1701, 1971, 2187, 3213, 3723, 4131, 4599, 5103, 5913, 8687, 9639, 11169, 12393, 13797, 15309, 17739, 26061, 28917, 33507, 37179, 41391, 53217, 78183, 86751, 100521, 124173, 159651, 234549, 260253, 301563, 372519, 703647, 904689, 1117557, 2110941, 2714067, 6332823, 18998469]

約数ペア:

[(1, 18998469), (3, 6332823), (7, 2714067), (9, 2110941), (17, 1117557), (21, 904689), (27, 703647), (51, 372519), (63, 301563), (73, 260253), (81, 234549), (119, 159651), (153, 124173), (189, 100521), (219, 86751), (243, 78183), (357, 53217), (459, 41391), (511, 37179), (567, 33507), (657, 28917), (729, 26061), (1071, 17739), (1241, 15309), (1377, 13797), (1533, 12393), (1701, 11169), (1971, 9639), (2187, 8687), (3213, 5913), (3723, 5103), (4131, 4599)]