18578043

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 31449600

約数和(自身を除く): 12871557

約数列:

[1, 3, 9, 11, 23, 33, 41, 69, 99, 123, 199, 207, 253, 369, 451, 597, 759, 943, 1353, 1791, 2189, 2277, 2829, 4059, 4577, 6567, 8159, 8487, 10373, 13731, 19701, 24477, 31119, 41193, 50347, 73431, 89749, 93357, 151041, 187657, 269247, 453123, 562971, 807741, 1688913, 2064227, 6192681, 18578043]

約数ペア:

[(1, 18578043), (3, 6192681), (9, 2064227), (11, 1688913), (23, 807741), (33, 562971), (41, 453123), (69, 269247), (99, 187657), (123, 151041), (199, 93357), (207, 89749), (253, 73431), (369, 50347), (451, 41193), (597, 31119), (759, 24477), (943, 19701), (1353, 13731), (1791, 10373), (2189, 8487), (2277, 8159), (2829, 6567), (4059, 4577)]