258025978

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{1979}}^1$

素因数の和:2194

約数の個数: 32

約数和(自身を含む): 452390400

約数和(自身を除く): 194364422

約数列:

[1, 2, 7, 14, 67, 134, 139, 278, 469, 938, 973, 1946, 1979, 3958, 9313, 13853, 18626, 27706, 65191, 130382, 132593, 265186, 275081, 550162, 928151, 1856302, 1925567, 3851134, 18430427, 36860854, 129012989, 258025978]

約数ペア:

[(1, 258025978), (2, 129012989), (7, 36860854), (14, 18430427), (67, 3851134), (134, 1925567), (139, 1856302), (278, 928151), (469, 550162), (938, 275081), (973, 265186), (1946, 132593), (1979, 130382), (3958, 65191), (9313, 27706), (13853, 18626)]