280331359

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{1091}}^1$

素因数の和:1227

約数の個数: 32

約数和(自身を含む): 362299392

約数和(自身を除く): 81968033

約数列:

[1, 7, 11, 47, 71, 77, 329, 497, 517, 781, 1091, 3337, 3619, 5467, 7637, 12001, 23359, 36707, 51277, 77461, 84007, 256949, 358939, 542227, 564047, 852071, 3640667, 3948329, 5964497, 25484669, 40047337, 280331359]

約数ペア:

[(1, 280331359), (7, 40047337), (11, 25484669), (47, 5964497), (71, 3948329), (77, 3640667), (329, 852071), (497, 564047), (517, 542227), (781, 358939), (1091, 256949), (3337, 84007), (3619, 77461), (5467, 51277), (7637, 36707), (12001, 23359)]