18017883

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:337

約数の個数: 40

約数和(自身を含む): 29516256

約数和(自身を除く): 11498373

約数列:

[1, 3, 9, 13, 27, 39, 71, 81, 117, 213, 241, 351, 639, 723, 923, 1053, 1917, 2169, 2769, 3133, 5751, 6507, 8307, 9399, 17111, 19521, 24921, 28197, 51333, 74763, 84591, 153999, 222443, 253773, 461997, 667329, 1385991, 2001987, 6005961, 18017883]

約数ペア:

[(1, 18017883), (3, 6005961), (9, 2001987), (13, 1385991), (27, 667329), (39, 461997), (71, 253773), (81, 222443), (117, 153999), (213, 84591), (241, 74763), (351, 51333), (639, 28197), (723, 24921), (923, 19521), (1053, 17111), (1917, 9399), (2169, 8307), (2769, 6507), (3133, 5751)]