18266409

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 31948800

約数和(自身を除く): 13682391

約数列:

[1, 3, 7, 9, 21, 31, 47, 63, 93, 141, 199, 217, 279, 329, 423, 597, 651, 987, 1393, 1457, 1791, 1953, 2961, 4179, 4371, 6169, 9353, 10199, 12537, 13113, 18507, 28059, 30597, 43183, 55521, 65471, 84177, 91791, 129549, 196413, 289943, 388647, 589239, 869829, 2029601, 2609487, 6088803, 18266409]

約数ペア:

[(1, 18266409), (3, 6088803), (7, 2609487), (9, 2029601), (21, 869829), (31, 589239), (47, 388647), (63, 289943), (93, 196413), (141, 129549), (199, 91791), (217, 84177), (279, 65471), (329, 55521), (423, 43183), (597, 30597), (651, 28059), (987, 18507), (1393, 13113), (1457, 12537), (1791, 10199), (1953, 9353), (2961, 6169), (4179, 4371)]