257788258

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{19403}}^1$

素因数の和:19498

約数の個数: 32

約数和(自身を含む): 482461056

約数和(自身を除く): 224672798

約数列:

[1, 2, 7, 13, 14, 26, 73, 91, 146, 182, 511, 949, 1022, 1898, 6643, 13286, 19403, 38806, 135821, 252239, 271642, 504478, 1416419, 1765673, 2832838, 3531346, 9914933, 18413447, 19829866, 36826894, 128894129, 257788258]

約数ペア:

[(1, 257788258), (2, 128894129), (7, 36826894), (13, 19829866), (14, 18413447), (26, 9914933), (73, 3531346), (91, 2832838), (146, 1765673), (182, 1416419), (511, 504478), (949, 271642), (1022, 252239), (1898, 135821), (6643, 38806), (13286, 19403)]