81418617

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{887}}^1$

素因数の和:978

約数の個数: 48

約数和(自身を含む): 141852672

約数和(自身を除く): 60434055

約数列:

[1, 3, 7, 9, 21, 31, 47, 63, 93, 141, 217, 279, 329, 423, 651, 887, 987, 1457, 1953, 2661, 2961, 4371, 6209, 7983, 10199, 13113, 18627, 27497, 30597, 41689, 55881, 82491, 91791, 125067, 192479, 247473, 291823, 375201, 577437, 875469, 1292359, 1732311, 2626407, 3877077, 9046513, 11631231, 27139539, 81418617]

約数ペア:

[(1, 81418617), (3, 27139539), (7, 11631231), (9, 9046513), (21, 3877077), (31, 2626407), (47, 1732311), (63, 1292359), (93, 875469), (141, 577437), (217, 375201), (279, 291823), (329, 247473), (423, 192479), (651, 125067), (887, 91791), (987, 82491), (1457, 55881), (1953, 41689), (2661, 30597), (2961, 27497), (4371, 18627), (6209, 13113), (7983, 10199)]