261580806

素因数分解:

$2^1\times 3^3\times {\mathrm{647}}^1\times {\mathrm{7487}}^1$

素因数の和:8145

約数の個数: 32

約数和(自身を含む): 582266880

約数和(自身を除く): 320686074

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 647, 1294, 1941, 3882, 5823, 7487, 11646, 14974, 17469, 22461, 34938, 44922, 67383, 134766, 202149, 404298, 4844089, 9688178, 14532267, 29064534, 43596801, 87193602, 130790403, 261580806]

約数ペア:

[(1, 261580806), (2, 130790403), (3, 87193602), (6, 43596801), (9, 29064534), (18, 14532267), (27, 9688178), (54, 4844089), (647, 404298), (1294, 202149), (1941, 134766), (3882, 67383), (5823, 44922), (7487, 34938), (11646, 22461), (14974, 17469)]