81420031

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 105255936

約数和(自身を除く): 23835905

約数列:

[1, 7, 11, 53, 71, 77, 281, 371, 497, 583, 781, 1967, 3091, 3763, 4081, 5467, 14893, 19951, 21637, 26341, 41393, 104251, 139657, 163823, 219461, 289751, 1057403, 1146761, 1536227, 7401821, 11631433, 81420031]

約数ペア:

[(1, 81420031), (7, 11631433), (11, 7401821), (53, 1536227), (71, 1146761), (77, 1057403), (281, 289751), (371, 219461), (497, 163823), (583, 139657), (781, 104251), (1967, 41393), (3091, 26341), (3763, 21637), (4081, 19951), (5467, 14893)]